ToolCMB

100% client-side — your files never leave your device

Free online tools that are fast, simple & private

Fast, free, and private online tools for everything. Compress, convert, edit, and manage images, PDFs, videos, audio, subtitles, code, and more — all in your browser. No sign-up, no uploads, no limits.

Popular: Image compressor JPG to WebP JSON formatter QR generator Percentage calculator Video Audio
Files uploaded to our servers
0
Processed in your browser
100%
No sign-up or watermark
Free
Typical processing time
< 1s

Popular tools

Hand-picked utilities people use every day. Pick a category to filter.

All tools
Image Background Remover Remove image backgrounds instantly and download transparent PNGs for free. MP3 Compressor Compress MP3 audio files online to reduce file size while maintaining good sound quality. Fast, free, and privacy-friendly. Music Visualizer Create stunning audio visualizations from your music with animated waveforms, frequency bars, and customizable colors. Perfect for music videos, podcasts, and social media content. PDF Compressor Compress PDF files online for free with a fast, privacy-focused tool. Reduce PDF file size without unnecessary uploads or complicated software. PDF Splitter Split PDF files online for free. Extract specific pages or divide large PDF documents into smaller files quickly and easily. Reminder SRT Editor SRT Editor – Edit SRT subtitle files online with ease. Adjust subtitle text, timing, and timestamps, then export your updated subtitles in SRT format. Video Compressor Compress video files online to reduce file size while maintaining good quality. Fast, free, and privacy-friendly video compression with no signup required. Image Compressor Popular Shrink JPG, PNG and WebP files by up to 80% without visible quality loss. Image Resizer Resize images to exact pixels or percentages, in bulk. JPG to WebP Convert JPG and PNG images to lightweight WebP for faster websites. HEIC to JPG New Open iPhone HEIC photos anywhere by converting them to JPG. JSON Formatter Popular Beautify, validate and minify JSON with syntax highlighting. Base64 Encoder Encode and decode text or files to Base64 instantly. Percentage Calculator Work out percentages, increases and differences in seconds. Mortgage Calculator Estimate monthly payments, interest and amortization schedules. QR Code Generator Popular Create QR codes for links, Wi-Fi, text and vCards. Download as PNG or SVG.

Why people choose ToolCMB

Built on modern browser technology so you get desktop-grade speed without installing anything.

Private by design

Files are processed locally with JavaScript and WebAssembly. Nothing is uploaded, stored or shared.

Instant results

No queue, no waiting for a server. Results appear the moment you drop a file.

Free forever

Every tool is free with no sign-up, no watermark and no daily limits.

Works everywhere

Desktop, tablet or phone — every tool is responsive and works offline once loaded.

Guides & tutorials

Short, practical articles to help you get more done with less effort.

View blog

Frequently asked questions

Can't find what you're looking for?

All FAQs
Are ToolCMB tools really free?

Yes. Every tool is free to use with no sign-up, no watermark and no daily limits. The site is supported by non-intrusive ads.

Are my files uploaded to your server?

No. Our tools process files locally in your browser using JavaScript and WebAssembly. Your files never leave your device.

Do I need to install anything?

No installation is required. The tools work in any modern browser on Windows, macOS, Linux, Android and iOS.

Is there a file size limit?

Because processing happens on your device, limits depend on your device memory. Most tools handle files up to several hundred megabytes.

Can I suggest a new tool?

Absolutely — use the contact page to tell us what you need.

Missing a tool you need?

Tell us what would make your day easier — we ship new tools every month.

Suggest a tool