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Merge PDFs, compress images, format JSON, generate passwords, and more — instantly in your browser, without uploading files to the cloud. No sign-up required.
Lightning fast
Optimized UI with code splitting
Private
Local processing, no accounts
Polished UX
Light/dark mode, drag & drop
AllToolHub is a free collection of 123+ online utility tools that run in your browser. Whether you need to merge a PDF, compress a photo, beautify JSON, or generate a strong password, you can finish the job without creating an account or uploading files to a cloud processor. Explore categories below or browse the full catalog.
Merge, split, compress, convert, and edit PDFs entirely in your browser.
18 tools
Compress, resize, convert, and edit images with no uploads to a server.
18 tools
Count, transform, clean, and generate text for everyday writing tasks.
15 tools
Format JSON, encode data, test regex, decode JWT, and more.
20 tools
Beautify markup, minify styles, and generate modern CSS snippets.
10 tools
Percentage, EMI, BMI, unit conversion, and other everyday calculators.
12 tools
Generate passwords, hashes, checksums, and QR codes privately.
8 tools
ZIP, inspect, hash, rename, and analyze files without leaving your device.
8 tools
Preview, format, and convert Markdown and HTML in the browser.
5 tools
Random generators, converters, dice, coin flips, and handy extras.
9 tools
PDF Tools
Combine multiple PDF files into a single document in your browser.
PDF Tools
Split a PDF into separate files by page ranges.
PDF Tools
Reduce PDF file size by rebuilding and optimizing the document.
PDF Tools
Convert one or more JPG images into a PDF document.
Image Tools
Shrink JPG, PNG, and WebP images with quality controls.
Image Tools
Resize images by exact dimensions or percentage.
Image Tools
Convert JPG images to WebP for smaller file sizes.
Text Tools
Count words, characters, sentences, and reading time.
Text Tools
Count characters with and without spaces.
Text Tools
Find and replace text with optional regex support.
JSON & Developer Tools
Format and beautify JSON with indentation controls.
JSON & Developer Tools
Validate JSON and show clear syntax errors.
PDF Tools
Combine multiple PDF files into a single document in your browser.
PDF Tools
Reduce PDF file size by rebuilding and optimizing the document.
Image Tools
Shrink JPG, PNG, and WebP images with quality controls.
Image Tools
Pick colors from an image or choose hex/RGB values.
Text Tools
Count words, characters, sentences, and reading time.
JSON & Developer Tools
Format and beautify JSON with indentation controls.
PDF Tools
Stamp text watermarks across every page of a PDF.
PDF Tools
Strip metadata fields from a PDF for privacy.
Image Tools
Generate common favicon PNG sizes from any image.
Text Tools
Generate placeholder paragraphs, sentences, or words.
JSON & Developer Tools
Compare two JSON documents and highlight differences.
JSON & Developer Tools
Build and explain common cron expressions.
HTML & CSS Tools
Build CSS Grid layouts and copy ready-made CSS.
Security Tools
Decode QR codes from uploaded images (manual decode aid).
Yes. Every tool is free to use with no account, subscription, or watermarks from us.
No. Processing runs in your browser whenever possible. Your files stay on your device for tool processing.
Never. There is no sign-up, login, or admin panel required to use the tools.
AllToolHub is a Progressive Web App. After the first visit, many pages can work offline via the service worker cache.
All modern browsers: Chrome, Edge, Firefox, Safari, and mobile equivalents.