Web tools
Free utilities focused on developer workflows. Every live tool runs fully client-side on getwebtool.space.
AI Token Cost Calculator
Estimate OpenAI, Claude, Gemini, and DeepSeek API costs from input/output tokens. Compare models side by side.
Open tool →JSON Formatter & Validator
Format, validate, and minify JSON instantly in your browser.
Open tool →Regex Tester
Test and explain regular expressions with live match highlighting.
Open tool →Cron Expression Generator
Build and validate cron schedules with plain-English previews.
Open tool →JWT Decoder
Decode and inspect JSON Web Tokens without sending data to a server.
Open tool →UUID Generator
Generate UUID v4 and ULID values in bulk, client-side.
Open tool →Base64 Encode & Decode
Encode and decode Base64 text and files locally in your browser.
Open tool →Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes online.
Open tool →Open Graph & Meta Preview
Preview social link cards and generate meta / Open Graph tags.
Open tool →Unix Timestamp Converter
Convert Unix epoch timestamps to dates and timezones instantly.
Open tool →