Free Online Developer Tools
Privacy-friendly utilities for developers — test regex, format JSON, encode Base64, generate UUIDs, decode JWT tokens, and more.
Developer Tools
Base64 Encode/Decode
Convert text to/from Base64 instantly — runs locally in your browser.
Hash Generator
Create SHA-256/SHA-1 hashes client-side for quick integrity checks.
UUID Generator
Generate RFC4122 UUID v4 identifiers and copy with one click.
URL Encoder/Decoder
Encode query params safely or decode percent-encoded strings.
JSON Formatter
Pretty-print, minify and validate JSON locally in your browser.
Timestamp Converter
Convert Unix time ↔ human-readable date with timezone/ISO output.
JWT Decoder
Decode JWT tokens and view header & payload JSON — runs locally.
Regex Tester
Test regular expressions and instantly highlight matches in your text.
CSV ↔ JSON Converter
Convert CSV to JSON or JSON to CSV with delimiter options.
Developer utilities in one place
Whether you need to generate unique identifiers, encode data in Base64, test a regex pattern, or decode JWT tokens, our developer hub provides fast, lightweight tools.
Many of these run entirely client-side — nothing leaves your browser. Safe, fast, and always free.
Developer Tools FAQ
Are these tools free to use? ＋
Yes, all developer tools on toWorthy are completely free and available without registration.
Is my data stored anywhere? ＋
No. Most tools (like JSON formatter, Base64 encoder, Regex tester) run fully in your browser. Nothing is uploaded to our servers.
What can I do with the JSON formatter? ＋
You can validate, pretty-print, and minify JSON. It helps quickly debug APIs or configs.
Is Base64 the same as encryption? ＋
No. Base64 only encodes data for safe text transmission. It can be easily decoded back.
What is a UUID generator used for? ＋
UUIDs provide unique identifiers for databases, systems, and distributed apps. They reduce the risk of collisions compared to sequential IDs.
Can I test Regex safely here? ＋
Yes. The Regex tester highlights matches in real time, directly in your browser, without sharing your text externally.