26 free tools · No sign-up · Private by design
Every everyday tool, in one beautiful place.
Compress images, merge PDFs, format JSON, count words and calculate anything — instantly, for free, right in your browser.
- Free tools
- 26
- Categories
- 5
- Files uploaded
- 0
Popular tools
The tools our visitors reach for most often.
- Image Tools
Image Compressor
Shrink photos without visible quality loss.
- Image Tools
Image Resizer
Change dimensions by pixels or percent.
- Text Tools
Word Counter
Words, sentences and reading time, live.
- Text Tools
Case Converter
Switch between ten letter cases instantly.
- Developer Tools
JSON Formatter
Beautify, minify and sort JSON.
- Developer Tools
Base64 Encoder / Decoder
Encode or decode Base64 text and files.
- Calculators
Percentage Calculator
Every common percentage question, solved.
- Calculators
BMI Calculator
Metric or imperial, with WHO categories.
Browse by category
Five toolkits covering images, text, code, numbers and documents.
Image Tools
6 tools
Compress, resize and convert JPG, PNG and WebP images right in your browser.
Image Compressor · Image Resizer · JPG to PNG Converter · PNG to JPG Converter · JPG to WebP Converter · WebP to PNG Converter
ExploreText Tools
6 tools
Count words, change letter case, clean whitespace and tidy up lists.
Word Counter · Character Counter · Case Converter · Remove Extra Spaces · Text Reverser · Duplicate Line Remover
ExploreDeveloper Tools
6 tools
Format and validate JSON, encode Base64, URL and HTML, and generate UUIDs.
JSON Formatter · JSON Validator · Base64 Encoder / Decoder · URL Encoder / Decoder · HTML Encoder / Decoder · UUID Generator
ExploreCalculators
4 tools
Percentages, age, BMI and discounts calculated instantly and accurately.
Percentage Calculator · Age Calculator · BMI Calculator · Discount Calculator
ExplorePDF Tools
4 tools
Merge, split and convert PDF files without uploading them anywhere.
Merge PDF · Split PDF · PDF to JPG · JPG to PDF
Explore
Recently added
Fresh additions to the ToolBox.
- PDF Tools
PDF to JPG
Convert every page into a JPG image.
- PDF Tools
JPG to PDF
Turn photos and scans into one PDF.
- Calculators
Discount Calculator
Know the real sale price before you buy.
- Developer Tools
UUID Generator
Secure v4 and v7 UUIDs in bulk.
- Text Tools
Text Reverser
Flip characters, words or lines.
- Text Tools
Duplicate Line Remover
Deduplicate lists and keep them tidy.
Why choose ToolBox World?
We built the toolbox we always wanted: beautiful, honest and respectful of your privacy.
Private by design
Files are processed on your own device. Nothing is uploaded, stored or shared.
Instant results
No queues or waiting for servers — tools respond as fast as your device can compute.
Free, without limits
No accounts, no daily caps, no watermarks and no premium tiers hiding features.
Works everywhere
Designed for phones, tablets and desktops, in every modern browser.
Lightweight & fast
Each tool loads only the code it needs, so pages open quickly even on slow connections.
Built for the world
Unicode-aware text tools, multiple currencies and metric or imperial units.
Frequently asked questions
Are ToolBox World tools really free?
Yes. Every tool is completely free to use with no registration, no usage limits and no watermarks. The site is supported by advertising.
Do you upload or store my files?
No. Image, PDF and text tools run entirely in your web browser using JavaScript. Your files are never sent to our servers, so they stay private.
Do the tools work on mobile phones?
Yes. The whole site is responsive and works in modern mobile browsers such as Chrome, Safari, Samsung Internet and Firefox on Android and iOS.
Can I use the tools offline?
Once a tool page has fully loaded, most tools keep working even if your connection drops, because all processing happens on your device.
Which browsers are supported?
The latest versions of Chrome, Edge, Firefox, Safari and Opera are supported. Some image features, such as creating WebP files, depend on browser support.
How can I suggest a new tool?
We'd love to hear from you! Use the contact page to tell us which tool you'd like to see next.