Developer tools, without the noise.
Fast, private utilities that run entirely in your browser. No account. No install. No telemetry.
JSON Formatter
Format, validate, and minify JSON data
→ Open toolCSV to JSON
Convert CSV or TSV files to JSON
→ Open toolBase64 Encoder/Decoder
Encode or decode Base64 strings
→ Open toolBase64 to Image
Convert a Base64 string to a viewable image
→ Open toolImage to Base64
Convert an image file or URL to Base64
→ Open toolDiff Checker
Compare two texts and highlight differences
→ Open toolURL Encoder/Decoder
Encode or decode URL components
→ Open toolEpoch Converter
Convert Unix timestamps to human-readable dates
→ Open toolUUID Generator
Generate random UUIDs — v4 (random) or v7 (time-ordered)
→ Open toolTinkerTools provides 9 free online utilities designed for developers, programmers, and web professionals. Each tool runs entirely in your browser for maximum speed and privacy. From formatting JSON and comparing text differences to encoding Base64 strings and converting Unix timestamps, all tools are optimized for speed and ease of use with no installation or setup required.