OnlineTextLab | Free Online Text Tools and File Converters

CSV to JSON Convert CSV to JSON in your browser. Paste data or upload a file, toggle header detection, infer types, and download pretty-printed JSON — no server, no account.

JSON to CSV Convert JSON arrays to CSV instantly. Flatten nested objects, pick a delimiter, and download a spreadsheet-ready .csv file — all processed locally in your browser.

XML to JSON Convert XML to JSON online. Paste any XML document and get a clean JSON object with attributes, namespaces handled — all processed locally, nothing uploaded.

YAML to JSON Convert YAML to JSON instantly in your browser. Supports multi-document YAML, anchors, aliases, and complex nested structures. No upload, no account needed.

JSON to YAML Convert JSON to YAML online. Paste any JSON object or array and get clean, human-readable YAML with proper indentation. Processed locally, nothing uploaded.

JSON to XML JSON to XML lets you convert JSON objects into XML locally in your browser with sample input, copy, download, and clear validation feedback.

CSV to YAML CSV to YAML lets you convert CSV rows into YAML records locally in your browser with sample input, copy, download, and clear validation feedback.

YAML to CSV YAML to CSV lets you convert YAML records into CSV locally in your browser with sample input, copy, download, and clear validation feedback.

CSV to TSV CSV to TSV lets you convert comma-separated rows into tab-separated rows locally in your browser with sample input, copy, download, and clear validation feedback.

TSV to CSV TSV to CSV lets you convert tab-separated rows into CSV locally in your browser with sample input, copy, download, and clear validation feedback.

CSV to SQL Inserts Generate SQL INSERT statements from CSV data instantly. Set the table name, and get ready-to-run SQL for MySQL, PostgreSQL, or SQLite — all in your browser.

JSON to TypeScript Generate TypeScript interfaces from JSON automatically. Paste any JSON object and get typed interfaces with proper optional fields, arrays, and nested types instantly.

JSON to JSON Schema JSON to JSON Schema lets you generate a basic JSON Schema from sample JSON locally in your browser with sample input, copy, download, and clear validation feedback.

JSON Flattener JSON Flattener lets you flatten nested JSON into dotted paths locally in your browser with sample input, copy, download, and clear validation feedback.

JSON Unflattener JSON Unflattener lets you expand dotted JSON paths into nested objects locally in your browser with sample input, copy, download, and clear validation feedback.

Markdown to HTML Convert Markdown to HTML instantly in your browser. Supports GFM tables, code blocks, footnotes — see a live preview and copy the HTML output.

HTML to Markdown Convert HTML to clean Markdown instantly. Handles headings, links, bold, lists, tables, and code blocks — all in your browser, no server required.

Markdown Previewer Markdown Previewer lets you preview Markdown and generate HTML locally in your browser with copy, download, and privacy-first controls.

Text to HTML Text to HTML lets you convert plain text paragraphs into simple HTML locally in your browser with copy, download, and privacy-first controls.

HTML to Text HTML to Text lets you extract readable text from HTML locally in your browser with copy, download, and privacy-first controls.

Markdown Table to CSV Markdown Table to CSV lets you convert a Markdown table into CSV locally in your browser with copy, download, and privacy-first controls.

CSV to Markdown Table CSV to Markdown Table lets you convert CSV rows into a Markdown table locally in your browser with copy, download, and privacy-first controls.

HTML Entity Encoder Decoder HTML Entity Encoder Decoder lets you encode or decode HTML entities locally in your browser with copy, download, and privacy-first controls.

HTML Minifier HTML Minifier lets you minify HTML by removing extra whitespace locally in your browser with copy, download, and privacy-first controls.

HTML Beautifier HTML Beautifier lets you format compact HTML onto readable lines locally in your browser with copy, download, and privacy-first controls.

JSON Formatter Format and beautify JSON online. Paste minified or messy JSON and get clean, 2-space indented output with syntax validation — instant, in-browser, no upload.

JSON Validator Validate JSON syntax online with exact error messages. Get line number, column, and a human-readable explanation for every JSON error — processed in your browser.

JSON Minifier JSON Minifier lets you minify JSON into compact output locally in your browser with sample input, copy, download, and privacy-first controls.

JWT Decoder Decode and inspect JSON Web Tokens in your browser. See the header, payload, and signature in readable JSON — no server, no logging, completely private.

Base64 Encode Decode Encode text to Base64 or decode Base64 to plain text instantly in your browser. Supports standard and URL-safe Base64, Unicode, and binary-safe encoding.

URL Parser Parse any URL into its components: protocol, host, port, path, query parameters, and hash fragment — instantly in your browser.

Regex Tester Test and debug regular expressions online. Paste your pattern and test string to see all matches highlighted, with capture groups listed and flags explained.

SQL Formatter Format and indent SQL queries for readability. Supports SELECT, INSERT, UPDATE, DELETE, JOIN, and subqueries — browser-only, instant formatting.

UUID Generator Generate random UUIDs (v4) or time-based UUIDs (v1) in bulk. Copy one or download hundreds as a list — instant, browser-based, no server.

Hash Generator Generate cryptographic hashes from text in your browser. Supports MD5, SHA-1, SHA-256, and SHA-512. No upload — computed locally using the Web Crypto API.

Diff Checker Compare two text blocks side-by-side and see additions, deletions, and unchanged lines highlighted. No upload — your text stays in the browser.

YAML Validator Validate YAML syntax online with precise error messages showing exact line and column. Supports YAML 1.2, anchors, and multi-document streams.

TOML Formatter TOML Formatter lets you format simple TOML snippets locally in your browser with sample input, copy, download, and privacy-first controls.

Markdown Table Generator Markdown Table Generator lets you generate Markdown tables locally in your browser with sample input, copy, download, and privacy-first controls.

Cron Expression Explainer Explain any cron expression in plain English. Shows the schedule, next run times, and breaks down each field — browser-based, free.

cURL Formatter cURL Formatter lets you summarize common curl command flags locally in your browser with sample input, copy, download, and privacy-first controls.

HTTP Header Parser HTTP Header Parser lets you parse HTTP response headers into a table locally in your browser with sample input, copy, download, and privacy-first controls.

Log Prettifier Prettify JSON log output from Node.js, Python, or any structured logging framework. Colorised, formatted, and readable — browser-only.

HTML Entity Encoder Decoder Encode text to HTML entities or decode HTML entities to plain text. Handles &, <, >, ", and all named and numeric entities.

URL Encode Decode URL encode or decode text online. Converts special characters to percent-encoded sequences (%20, %2F, etc.) and back — browser-only, instant.

JSON to TypeScript JSON to TypeScript lets you infer TypeScript interfaces from JSON locally in your browser with sample input, copy, download, and privacy-first controls.

JSON Path Tester JSON Path Tester lets you test a simple JSON path against JSON locally in your browser with sample input, copy, download, and privacy-first controls.

Remove Timestamps Remove timestamps from transcripts, SRT files, and meeting notes instantly. Handles all common timestamp formats — paste and get clean text in one click.

SRT to TXT Convert SRT subtitle files to clean plain text. Removes all timestamps and subtitle numbers, giving you a readable transcript — instant, no upload required.

Transcript Cleaner Clean messy transcripts in one click. Remove timestamps, speaker labels, and filler words (um, uh, like) from Zoom, Teams, Otter.ai, or any raw transcript.

Remove Speaker Labels Remove speaker labels like 'John:' and 'SPEAKER 1:' from transcripts instantly. Clean readable text in one click — browser-only, no upload.

Create Subtitles Create Subtitles helps you create approximate subtitle cues from text locally in your browser with sample input, copy, download, and privacy-first controls.

Transcript to SRT Transcript to SRT helps you convert transcript text into approximate SRT locally in your browser with sample input, copy, download, and privacy-first controls.

Transcript to VTT Transcript to VTT helps you convert transcript text into approximate WebVTT locally in your browser with sample input, copy, download, and privacy-first controls.

TXT to SRT TXT to SRT helps you convert plain text into approximate SRT locally in your browser with sample input, copy, download, and privacy-first controls.

VTT to TXT VTT to TXT helps you extract plain transcript text from WebVTT locally in your browser with sample input, copy, download, and privacy-first controls.

SRT to VTT SRT to VTT helps you convert SRT subtitles to WebVTT locally in your browser with sample input, copy, download, and privacy-first controls.

VTT to SRT VTT to SRT helps you convert WebVTT subtitles to SRT locally in your browser with sample input, copy, download, and privacy-first controls.

Transcript to Article Convert raw transcripts into clean, readable article drafts. Removes filler words, reformats into paragraphs, and structures the text for publishing.

Remove Filler Words Remove Filler Words helps you remove common filler words from transcript text locally in your browser with sample input, copy, download, and privacy-first controls.

Merge Transcript Lines Merge Transcript Lines helps you merge broken transcript lines locally in your browser with sample input, copy, download, and privacy-first controls.

Transcript Paragraph Formatter Transcript Paragraph Formatter helps you format transcript text into readable paragraphs locally in your browser with sample input, copy, download, and privacy-first controls.

YouTube Transcript Cleaner Clean YouTube auto-generated transcripts. Fixes lowercase-everything text, removes repetition and caption noise — readable output in one click.

Zoom Transcript Cleaner Clean Zoom auto-generated transcripts. Removes timestamps, speaker names, and formatting noise — readable meeting notes in one click.

Podcast Transcript Cleaner Clean podcast transcripts from auto-transcription services. Removes HOST/GUEST labels, filler words, and formatting noise for a publishable script.

Word Counter Count words, characters, sentences, paragraphs, and reading time in real time. Paste or upload text — live stats update as you type, all in your browser.

Character Counter Count characters with and without spaces, words, lines, and UTF-8 bytes in real time. Essential for Twitter, SMS, meta tags, and form field limits.

Case Converter Convert text between uppercase, lowercase, title case, sentence case, camelCase, snake_case, and kebab-case instantly. Paste text and click — all in your browser.

Remove Duplicate Lines Remove duplicate lines from any text list instantly. Case-insensitive mode, blank line removal, and sorted output options — all in your browser, no upload.

Sort Lines Sort lines alphabetically, in reverse, numerically, or randomly online. Options for case-insensitive sort and blank line handling — instant, free, no upload.

Remove Empty Lines Remove all empty and blank lines from text instantly. Optionally remove lines with only whitespace — paste and get clean output in one click.

Find and Replace Find and replace text with plain text or regex patterns. Supports global replace, case-insensitive matching, and capture group references in the replacement.

Text Splitter Split text into chunks by lines, words, characters, or a custom delimiter. Set chunk size and get numbered output — browser-based, free.

Text Joiner Join multiple lines of text with a custom separator. Comma, space, semicolon, or any delimiter — paste lines and get a joined string instantly.

Slug Generator Convert any title or phrase into a clean URL slug. Handles accented characters, special symbols, and multiple spaces — instant, browser-based.

Line Counter Count total, empty, and non-empty lines in any text instantly. Paste or upload a file — live stats, no upload required.

Random Text Generator Generate random placeholder text online. Choose Lorem Ipsum, random words, or random sentences — set word count, paragraph count, and copy instantly.

TXT to PDF Convert TXT or pasted text to a PDF online. Choose page size, font, margins, line spacing, title, page numbers, and download your PDF. Your text stays in your browser.

Markdown to PDF Markdown to PDF lets you preview Markdown and export it as a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

HTML to PDF HTML to PDF lets you sanitize pasted HTML, preview it, and export the readable content as a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

Images to PDF Images to PDF lets you combine JPG, PNG, or WebP images into a single PDF locally in your browser with copy, download, privacy notes, and clear limitations.

JPG to PDF JPG to PDF lets you combine one or more JPG files into a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

PNG to PDF PNG to PDF lets you combine one or more PNG files into a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

WebP to PDF WebP to PDF lets you convert one or more WebP images into a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

PDF to Images PDF to Images lets you render PDF pages to PNG or JPG images locally in your browser with copy, download, privacy notes, and clear limitations.

PDF Page Extractor PDF Page Extractor lets you copy selected PDF pages into a new file locally in your browser with copy, download, privacy notes, and clear limitations.

PDF Page Remover PDF Page Remover lets you remove selected pages from a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

PDF Merger Merge multiple PDF files into one document in your browser. Drag to reorder pages, then download the combined PDF — no server upload, completely private.

PDF Splitter Split a PDF into individual pages or page ranges in your browser. Download each part as a separate PDF file — no server, no account required.

PDF Compressor Compress PDF files to reduce their size in your browser. Choose compression level, see the before/after file size, and download the smaller PDF — no upload to servers.

PDF Metadata Viewer PDF Metadata Viewer lets you read available PDF metadata and page count locally in your browser with copy, download, privacy notes, and clear limitations.

PDF Rotate Pages PDF Rotate Pages lets you rotate every page or selected pages in a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

PDF Watermark PDF Watermark lets you add a text watermark to each page of a PDF locally in your browser with copy, download, privacy notes, and clear limitations.

PDF to Text Extract text from PDF files in your browser. Supports plain text or page-by-page output, shows word and character count — your file never leaves your device.

JPG to PNG Convert JPG images to PNG format instantly in your browser. Preserves full quality, no upload, no watermark — download your PNG immediately.

PNG to JPG Convert PNG to JPG online. Set the JPEG quality, choose the background colour for transparent PNGs, and download instantly — all in your browser.

WebP to PNG Convert WebP images to PNG format instantly in your browser. Lossless output, no upload, no account — download your PNG immediately.

PNG to WebP Convert PNG to WebP in your browser. Adjust quality, see size savings instantly, and download — no upload, no account, no watermark.

JPG to WebP Convert JPEG to WebP online for 25-35% smaller files. Adjust quality, see size comparison, download instantly — browser-only, no upload.

WebP to JPG Convert WebP to JPEG in your browser. Set quality level, choose a background for transparent areas, and download — no server, no account.

Image Compressor Compress images without losing visible quality. Adjust compression level, see before/after file size, and download — all processed locally in your browser.

Image Resizer Resize images to exact pixel dimensions or a percentage in your browser. Maintain aspect ratio, choose output format, and download instantly — no upload.

Image Cropper Crop images to exact pixel coordinates in your browser. Set X, Y, width, and height — preview and download the cropped image instantly, no upload.

Image to Base64 Convert any image to a Base64 data URI in your browser. Copy the encoded string for use in CSS, HTML, or APIs — no upload required.

Base64 to Image Decode a Base64 data URI to a viewable image in your browser. Preview the decoded image and download it as PNG, JPG, or WebP.

SVG to PNG Convert SVG files to PNG in your browser. Set output dimensions, preview the result, and download — no server, no account required.

PNG to ICO Convert PNG to ICO format in your browser. Select icon sizes (16×16, 32×32, 48×48, 64×64) and download the multi-size .ico file instantly.

Favicon Generator Generate a complete favicon set from a PNG or SVG image. Creates .ico, 16×16, 32×32, and 180×180 Apple touch icon — all in your browser, free.

Create ZIP from Files Create ZIP from Files lets you create a ZIP file from selected local files locally in your browser with copy, download, and privacy-first controls.

Extract ZIP File List Extract ZIP File List lets you list filenames inside a ZIP without extracting them locally in your browser with copy, download, and privacy-first controls.

DOCX to TXT Extract plain text from Word documents in your browser. Drop a .docx file and get clean, copyable text in seconds — no upload, no Microsoft Word required.

TXT to DOCX TXT to DOCX lets you turn pasted or uploaded text into a simple DOCX document locally in your browser with copy, download, and clear privacy notes.

Markdown to DOCX Markdown to DOCX lets you convert common Markdown blocks into a DOCX document locally in your browser with copy, download, and clear privacy notes.

DOCX to Markdown DOCX to Markdown lets you extract DOCX text and convert supported structure to Markdown locally in your browser with copy, download, and clear privacy notes.

DOCX Word Counter DOCX Word Counter lets you count words, characters, paragraphs, and lines in a DOCX file locally in your browser with copy, download, and clear privacy notes.

DOCX Metadata Viewer DOCX Metadata Viewer lets you inspect available DOCX metadata and basic document stats locally in your browser with copy, download, and clear privacy notes.

RTF to TXT RTF to TXT lets you extract readable plain text from RTF content locally in your browser with copy, download, and clear privacy notes.

TXT to RTF TXT to RTF lets you turn plain text into a simple RTF document locally in your browser with copy, download, and clear privacy notes.

DOCX to PDF DOCX to PDF lets you extract DOCX text and create a clean readable PDF locally in your browser with copy, download, and clear privacy notes.

Excel to CSV Excel to CSV lets you export an Excel worksheet to CSV locally in your browser with copy, download, and clear privacy notes.

Excel to JSON Excel to JSON lets you convert an Excel worksheet into structured JSON locally in your browser with copy, download, and clear privacy notes.

CSV to Excel CSV to Excel lets you turn CSV data into a downloadable Excel workbook locally in your browser with copy, download, and clear privacy notes.

PowerPoint to Text PowerPoint to Text lets you extract readable slide text from a PowerPoint file locally in your browser with copy, download, and clear privacy notes.

Password Generator Generate strong, random passwords with custom length and character sets — entirely in your browser. No data is sent anywhere.

Color Converter Convert colors between HEX, RGB, and HSL formats instantly in your browser. Visual color preview and one-click copy for each format.

Number Base Converter Convert numbers between decimal, binary, octal, and hexadecimal instantly. Type in any base and all others update automatically.

Unix Timestamp Converter Convert Unix timestamps to human-readable dates, or convert dates to Unix timestamps. Shows local time, UTC, ISO 8601, and relative time.

Word Frequency Counter Count how often each word appears in your text. Sortable frequency table with optional stop word filtering and CSV export.

SEO URL Inspector Audit any public URL for SEO issues. Checks meta title, description, H1-H6, Open Graph, robots directives, canonical URL, and schema markup in one report.

SERP Preview Preview how your page title and description will appear in Google search results. Check character limits and see mobile and desktop previews side by side.

Meta Title Checker Meta Title Checker lets you check a page title tag for length and presence. Runs entirely in your browser.

Meta Description Checker Meta Description Checker lets you check a meta description for length and presence. Runs entirely in your browser.

Headings Checker Headings Checker lets you review the heading structure of a page. Runs entirely in your browser.

Robots Meta Checker Robots Meta Checker lets you check the robots meta tag and canonical URL in page HTML. Runs entirely in your browser.

Schema Markup Checker Schema Markup Checker lets you extract and display JSON-LD schema markup from page HTML. Runs entirely in your browser.

Open Graph Checker Open Graph Checker lets you check Open Graph meta tags for social sharing readiness. Runs entirely in your browser.

Twitter Card Checker Twitter Card Checker lets you check Twitter card meta tags. Runs entirely in your browser.

Image Alt Text Checker Image Alt Text Checker lets you check images in page HTML for alt attributes. Runs entirely in your browser.

Canonical URL Checker Canonical URL Checker lets you check the canonical link element in page HTML. Runs entirely in your browser.

Link Checker Link Checker lets you count and summarise links in page HTML. Runs entirely in your browser.

Length Converter Convert between centimetres, metres, kilometres, inches, feet, yards, and miles instantly. All units update simultaneously — no account, browser-only.

Weight Converter Convert weight between kilograms, pounds, ounces, grams, milligrams, stone, and metric tons instantly. All units live-update — browser-only.

Temperature Converter Convert temperature between Celsius, Fahrenheit, Kelvin, and Rankine instantly. Live conversion as you type — no account, browser-only.

Speed Converter Convert speed between mph, km/h, m/s, knots, and ft/s instantly. All units update live as you type — browser-only, no account required.

Area Converter Convert area between square feet, square metres, acres, hectares, and more instantly. All units live-update — browser-only.

Volume Converter Convert volume between litres, millilitres, gallons, fluid ounces, cups, pints, quarts, and cubic units instantly — browser-only.

Data Storage Converter Convert between bits, bytes, KB, MB, GB, TB, and PB instantly. Shows both SI (decimal) and IEC (binary) values — browser-only.

Time Unit Converter Convert between milliseconds, seconds, minutes, hours, days, weeks, months, and years instantly — browser-only, free.

Color Picker Pick any color visually and instantly get HEX, RGB, HSL, and HSV values. Browser-based color picker with live preview — no account needed.

Color Palette Generator Generate harmonious color palettes from any base color. Complementary, analogous, triadic, tetradic, and split-complementary schemes — free, browser-based.

CSS Gradient Generator Build CSS linear, radial, and conic gradients visually. Add color stops, set direction, copy ready-to-use CSS — free, browser-only.

Color Contrast Checker Check color contrast ratios against WCAG 2.1 AA and AAA standards. Enter foreground and background colors — instant pass/fail results, browser-only.

Image Color Picker Upload any image and click to pick colors from it. Extract the dominant color palette and copy HEX/RGB values — browser-only, no upload to server.

Date Calculator Calculate the number of days between two dates, or add/subtract days from any date. Handles leap years, weekends, and business days — browser-only.

Age Calculator Calculate exact age from a birthdate. Shows years, months, days, total days, weeks, and next birthday countdown — browser-only, instant.

Time Zone Converter Convert time between any world time zones. Supports all IANA zones with DST awareness. Find the best meeting time — browser-based, free.

Countdown Timer Count down the exact days, hours, minutes, and seconds until any future date or event. Live countdown, shareable link — browser-only.

Day of the Week Find what day of the week any date falls on — past, present, or future. Works for any date from year 1 to 9999 — browser-only.

Percentage Calculator Calculate percentages three ways: what is X% of Y, what percent is X of Y, and percentage change. Instant results — browser-only, free.

Fraction Calculator Add, subtract, multiply, and divide fractions with step-by-step working shown. Simplifies results automatically — free, browser-only.

Compound Interest Calculator Calculate compound interest on any investment. Set principal, rate, frequency, and time — see total value, interest earned, and year-by-year breakdown — browser-only.

Scientific Calculator Full-featured scientific calculator in your browser. Trigonometry, logarithms, powers, factorial, degree/radian toggle — keyboard and click supported.

GCD & LCM Calculator Calculate the GCD (Greatest Common Divisor) and LCM (Lowest Common Multiple) of any numbers with step-by-step working — browser-only, free.

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Word Counter

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CSV to JSON

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Temperature Converter

Length Converter

Transcript Cleaner

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Markdown to HTML

Image Compressor

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Every text task, done in your browser