Every text task,
done in your browser
140+ tools for cleaning transcripts, converting data, formatting code, inspecting SEO, and handling PDFs and images — all running locally on your device.
Search 140+ tools
Try: word counter · CSV to JSON · diff checker · hash generator
Tool categories
PDF Tools
Prepare, inspect, and convert PDF files with clear privacy controls.
Image Converters
Convert, resize, compress, and prepare common image formats.
Document Converters
Move between text, DOCX, Markdown, and RTF formats.
Data Converters
Convert and reshape CSV, JSON, XML, YAML, TSV, and schema data.
Markdown & HTML Tools
Convert, preview, clean, and inspect Markdown, HTML, and plain text.
File Helpers
Create small ZIP files and inspect ZIP contents safely in your browser.
Transcript Tools
Clean transcripts, remove timestamps, and prepare subtitle text.
Developer Tools
Format, validate, decode, compare, and inspect developer text.
Text Tools
Count, clean, sort, split, join, and reshape everyday text.
SEO Tools
Inspect metadata, headings, links, structured data, and social previews.
Popular tools
Word Counter
Count words, characters, lines, paragraphs, and sentences locally in your browser with copy and download output.
Use toolCSV to JSON
Convert CSV to JSON in your browser with delimiter detection, optional headers, pretty output, copy, and download controls.
Use toolJSON Formatter
JSON Formatter lets you format JSON with readable indentation locally in your browser with sample input, copy, download, and privacy-first controls.
Use toolMarkdown to HTML
Convert Markdown to HTML locally with support for headings, lists, links, inline code, code blocks, and simple tables.
Use toolImage Compressor
Image Compressor lets you compress JPG, PNG, or WebP images with browser canvas export locally in your browser with preview, download controls, and clear privacy notes.
Use toolTranscript Cleaner
Transcript Cleaner helps you clean rough transcript exports locally in your browser with sample input, copy, download, and privacy-first controls.
Use toolDiff Checker
Diff Checker lets you compare two text blocks line by line locally in your browser with sample input, copy, download, and privacy-first controls.
Use toolHash Generator
Hash Generator lets you generate SHA hash values from text locally in your browser with sample input, copy, download, and privacy-first controls.
Use toolFrom zero to done in seconds
Every tool is designed to start working the moment you open it — no onboarding, no setup.
Paste or upload
Drop in text, paste from clipboard, or open a local file. Nothing is sent to a server.
Pick your tool
Search or browse 140+ tools by category. Each one does a single job, done well.
Copy and done
Results appear instantly. Copy, download, or keep working — no wait, no queue, no account.
Your data stays on your device
Every tool is built with a browser-first model. Text you paste and files you open are processed locally — no upload happens unless you explicitly choose a server workflow and confirm consent.
Read the privacy modelNo uploads by default
Text and files are processed entirely in your browser. Nothing is sent to any server.
Consent before server use
The few tools that need a server ask for explicit consent and give you a delete button.
No accounts, no tracking
No signup, no cookies beyond essential site function, no ad trackers.
Temporary files deleted in 1 h
Any server-processed file is automatically deleted within one hour, or on request.
Frequently asked
Are these tools really free?
Yes. OnlineTextLab is free to use with no ads, no premium tier, and no account gate. The goal is to provide useful tools that work without friction.
Do these tools upload my files or text?
No by default. Every tool in this collection is designed to run in your browser. Your text, files, and data never leave your device unless a tool explicitly says so — and even then, it asks for your consent first.
Do I need to create an account?
No. Tools are available directly at their URLs without signup, login, or cookie consent walls.
Which browsers are supported?
All modern browsers including Chrome, Firefox, Safari, and Edge. Tools use standard browser APIs without plugins or extensions.