Document Processing Tools
Free tools for working with documents and data. Process PDFs, clean CSV files, format JSON, and compare text, all in your browser with complete privacy.
PDF Tools
Split and merge PDF files instantly. Combine multiple PDFs into one or extract specific pages. All processing happens in your browser. Your files never leave your device.
CSV Cleaner
Clean and format CSV files with ease. Remove duplicates, filter rows, sort data, and export clean CSV. Perfect for data analysts and anyone working with spreadsheets.
JSON Formatter
Format, validate, and beautify JSON data online. Check syntax errors, minify for production, or beautify for readability. Essential tool for developers working with APIs.
Text Diff Checker
Compare two text files and see differences highlighted. Perfect for comparing code, documents, or any text content. Side-by-side view makes differences obvious.
Why Use Our Document Tools?
100% Private
All processing happens in your browser. Your documents never leave your device. No uploads to servers.
Lightning Fast
No waiting for uploads or processing queues. Work with your documents and data instantly.
No Limitations
Process files of any size, unlimited operations, no watermarks, no forced sign-ups.
Common Use Cases
PDF Processing
- • Merge multiple invoices or receipts
- • Extract pages from reports
- • Combine documents for printing
Data Cleaning
- • Remove duplicate entries from lists
- • Filter customer data by criteria
- • Sort and organize spreadsheets
JSON Validation
- • Debug API responses
- • Format configuration files
- • Validate JSON syntax before deployment
Text Comparison
- • Compare contract versions
- • Review code changes
- • Check document revisions
Frequently Asked Questions
Are PDF and CSV tools really private?
Yes. PDF merge/split, CSV cleaning, JSON formatting, and Text Diff all run in your browser with JavaScript. Files and text never upload to Instant Tools servers.
Text Diff vs Prompt Diff: which should I use?
Text Diff compares any two plain texts with Myers diff (like Git). Prompt Diff is tuned for system prompts, AGENTS.md, CLAUDE.md, and Cursor rules with word-level highlights.
Is there a file size limit?
Limits depend on your device's memory. Most browsers handle PDFs and CSVs up to several hundred MB; for huge files, split work on desktop.
Do I need an account?
No registration. All four document tools are free with no usage caps.