Free online developer tools

6 tools

Small utilities developers reach for daily: JSON and YAML formatters, Base64 and URL encoders, regex testers, JWT decoders, diff viewers and cron helpers. Prefer tools marked as running in your browser when you paste tokens, keys or production data, because nothing is uploaded.

Showing 1–6 of 6

0.578score
Dev Decoder for Base64, Gzip and JWT
decodeme.lovable.app
Decodes Base64, Gzip and JWT tokens and formats the JSON inside, all client-side.
ArtifactNo sign-upIn-browserdeveloper tools
0.578score
KubeLeak Kubernetes Waste Finder
KubeLeak (Bolt)
Reads a cluster snapshot, flags over-provisioned workloads and estimates the wasted spend.
ArtifactNo sign-upIn-browserdeveloper tools
0.578score
NovaTools JSON Formatter
NovaTools AI
Formats, validates and minifies JSON in the browser, with 2 or 4 space indents.
ArtifactNo sign-upIn-browserdeveloper tools
0.578score
Online JSON Editor
jsoneditor.lovable.app
Edits, formats and validates JSON text, with a tree view, in a browser tab.
ArtifactNo sign-upIn-browserdeveloper tools
0.578score
Regex Tester
Tools Lab PRO
Tries regular expressions against sample text and shows matches live.
ArtifactNo sign-upIn-browserdeveloper tools
0.578score
Text Base64 Encoder
RizzKit
Converts UTF-8 text to Base64 and Base64 strings back to text.
ArtifactNo sign-upIn-browserdeveloper tools