Every tool you need,
Right in your browser.
PDF, image, text, developer and everyday tools for people who fix, build and tinker. Fast, free and private — nothing is uploaded, and it keeps working offline.
Merge PDF
Combine several PDFs into one file, in any order.
Split PDF
Extract page ranges or split every page into its own PDF.
Organize PDF Pages
Reorder, rotate and delete pages visually.
Compress PDF
Shrink scanned and image-heavy PDFs.
PDF to JPG
Turn every PDF page into a JPG or PNG image.
JPG to PDF
Combine photos and images into a single PDF.
Watermark PDF
Stamp text like “CONFIDENTIAL” across every page.
Image
View allCompress Image
Make JPG, PNG and WebP files smaller in bulk.
Resize Image
Change image dimensions by pixels or percentage.
Image Converter
Convert between JPG, PNG, WebP — and from HEIC.
Crop Image
Crop freely or to 1:1, 4:3, 16:9 and more.
Color Picker from Image
Pick colors and extract a palette from any image.
Favicon Generator
Create favicons and app icons from an image or text.
Remove EXIF Data
See and strip hidden GPS and camera metadata.
Text
View allWord Counter
Count words, characters, sentences and reading time.
Case Converter
UPPER, lower, Title, Sentence, camelCase and more.
Remove Duplicates & Sort
Remove duplicate lines, sort, trim and clean lists.
Find & Replace
Find and replace text, with optional regex.
Text Compare (Diff)
Highlight differences between two texts.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words.
Developer
View allJSON Formatter & Validator
Beautify, minify and validate JSON with error hints.
Base64 Encode / Decode
Encode and decode Base64 text and files.
URL Encode / Decode
Percent-encode text and parse URLs into parts.
Hash Generator
SHA-1, SHA-256, SHA-384, SHA-512 for text or files.
UUID Generator
Generate v4 and v7 UUIDs in bulk.
JWT Decoder
Decode JSON Web Token header, payload and expiry.
Regex Tester
Test regular expressions with live highlighting.
Unix Timestamp Converter
Convert epoch time to dates and back.
Calculators
View allAge Calculator
Exact age in years, months and days.
Percentage Calculator
X% of Y, percent change, and more.
BMI Calculator
Body Mass Index in metric or imperial units.
Loan / EMI Calculator
Monthly installment, total interest and schedule.
Discount Calculator
Sale price, savings and stacked discounts.
Date Difference Calculator
Days, weeks and business days between dates.
Converters
View allGenerators
View allSri Lanka
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Suggest a toolBuilt to fix things.
Merge it, shrink it, convert it, count it — then get on with your day. Your files never leave your device.
Browse all 45 toolsWhy Red Cat Tools?
Most online tools upload your files to their servers. Ours never do — your device does all the work.
Private by design
Files are processed on your device. Nothing is uploaded, logged or stored on a server.
Works offline
Once loaded, every tool keeps working without an internet connection — install it like an app.
Instant results
No upload queues or waiting. Results appear as fast as your device can process them.
Free forever
No accounts, no watermarks, no paywalls. Just open a tool and get the job done.
Frequently asked questions
Is Red Cat Tools really free?
Yes. Every tool is free to use with no sign-up, no watermarks and no daily limits.
Are my files uploaded anywhere?
No. All processing happens in your browser using JavaScript. Your PDFs, images and text never leave your device.
Does it work without internet?
Yes. After your first visit, Red Cat Tools saves itself on your device, so the tools keep working offline. You can also install it as an app from your browser menu.
Is there a file size limit?
There is no fixed limit. Because files are processed on your device, very large files are only limited by your device memory.
Do I need to install anything?
No installation is needed. It works in any modern browser on phones, tablets and computers.
Can I request a new tool?
Yes! Use the contact page to suggest the tools you would like to see next.