PopularDeveloper
JSON Formatter
Format, minify and validate JSON instantly.
Open tool →
19 tools · zero uploads · always free
Your everyday tools.
Ridiculously fast.
A focused collection of private, browser-based utilities for developers, creators, and everyone who wants to get small things done.
Ctrl K
100%Browser-based
0Files uploaded
∞Daily usage
⌁No signup
01Pick a tool.
Pick a tool.
Get it done.
Useful utilities with instant results. No waiting, no accounts, no nonsense.
PopularDeveloper
Base64 Studio
Encode and decode text without sending it anywhere.
Open tool →
Developer
URL Encoder
Safely encode or decode URLs and query values.
Open tool →
NewDeveloper
UUID Generator
Generate one or many secure UUID v4 identifiers.
Open tool →
Security
Hash Generator
Create SHA-256, SHA-384 or SHA-512 hashes locally.
Open tool →
PopularSecurity
Password Generator
Create strong, customizable passwords and passphrases.
Open tool →
PopularText
Word Counter
Count words, characters, sentences and reading time.
Open tool →
Text
Case Converter
Switch text between eight useful naming styles.
Open tool →
Text
Lorem Ipsum
Generate clean placeholder paragraphs on demand.
Open tool →
NewDeveloper
Regex Tester
Test expressions with live matches and common flags.
Open tool →
PopularColor
Color Converter
Convert HEX colors to RGB and HSL with a live preview.
Open tool →
Time
Timestamp Converter
Convert Unix timestamps and human-readable dates.
Open tool →
Developer
Number Base Converter
Convert decimal, binary, octal and hexadecimal values.
Open tool →
NewImage
Image Compressor
Resize and compress images privately in your browser.
Open tool →
PopularNewImage
Image Converter
Convert PNG, JPG and WebP images to any common format.
Open tool →
NewImage
Background Remover
Remove plain and near-solid backgrounds with precision controls.
Open tool →
PopularNewPDF
Images to PDF
Combine PNG and JPG images into one ordered PDF.
Open tool →
PopularNewPDF
Merge PDF
Combine multiple PDF documents in your chosen order.
Open tool →
NewPDF
Extract PDF Pages
Create a new PDF from selected pages or page ranges.
Open tool →
02Small tools.
Small tools.
Big standards.
Utility websites shouldn't feel like an obstacle course. Toolstack is designed around speed, clarity, and your privacy.
Private by design
Your files and text stay in your browser. We don't need to see them to help you.
Instant by default
No signups, artificial limits, or loading screens between you and the result.
Made for real work
Keyboard friendly, responsive, accessible, and ready when your deadline is close.
Your new utility beltOne bookmark.
Explore every tool ↗