Developer Toolkit
Browse developer utilities by category — Text, Encoding, SQL and Utilities — entirely in your browser.
Processed locally — your file never leaves your device
Text
Text manipulation and comparison utilities.
- Text Diff
- JSON Diff
- Word Counter
- Character Counter
- Line Counter
- Remove Empty Lines
- Remove Duplicate Lines
- Sort Lines
- Reverse Lines
- Trim Whitespace
- Normalize Line Endings
- Case Converter
- Regex Tester
13 toolsOpen
Encoding
Encoding and decoding utilities.
- Base64 Encode
- Base64 Decode
- URL Encode
- URL Decode
- HTML Encode
- HTML Decode
- Unicode Escape
- Unicode Unescape
- JWT Decoder
9 toolsOpen
SQL
Format SQL and generate SQL statements from CSV data.
3 toolsOpen
Utilities
Generators and converters for everyday developer tasks.
3 toolsOpen
Frequently asked questions
- Is anything I paste into these tools sent to a server?
- No. Every tool here runs entirely in your browser using JavaScript already loaded with the page. Nothing you type, paste or open is transmitted anywhere, and there is no server endpoint that could receive it.
- Do these tools work offline?
- Yes, once the page has loaded. Because the processing happens on your device, you can disconnect from the internet and every tool still works — which is also the simplest way to verify the claim above for yourself.
- Why isn't this called a Studio like the other applications?
- Because it genuinely isn't one. Data, PDF, Image and Geospatial Studio are each a single workspace where you load a file once and move between tabs. The Developer Toolkit is a collection of independent utilities that mostly don't share a document, so it's organized as categories of separate tools instead.
- Can I use these on confidential data?
- That's what they're built for. Pasting a token, an internal query or a customer export into a conventional online formatter hands a copy to whoever runs it. Here the text stays in the tab, so the usual reason to hesitate doesn't apply.
- Do I need to create an account or pay?
- No. There are no accounts, no sign-in and no paid tier — every tool is free and immediately usable.