Free online developer tools for everyday coding
consolelog.tools is a browser-based developer toolbox — a single destination for the small utilities you reach for all day. Format JSON, decode a JWT, test a regex, convert Base64, generate UUIDs, format SQL, and pick colors, using 300+ free online developer tools that run instantly in your browser.
There’s no signup, no account, and nothing to install. Almost every tool processes your input entirely on your own device, so tokens, config, and snippets never get sent to a server. Below are the most-used tools and the ones grouped by the job you’re actually doing; the full searchable directory and category index have all 300+.
Most-used developer tools
View allTools by developer workflow
Grouped by what you’re trying to get done, not just by type. Each set is a real workflow you can move through end to end — or follow the step-by-step workflow guides.
API & backend debugging
A malformed response or a 401 you can’t explain — format it, decode the token, replay the request.
JSON & data conversion
Reshape data between JSON, TypeScript, CSV, YAML, and XML without writing a throwaway script.
Authentication & encoding
Encode, decode, hash, and sign — Base64, JWTs, bearer tokens, HMAC, and hashes.
Code formatting & validation
Beautify, minify, and validate source across HTML, CSS, JavaScript, SQL, XML, and JSON.
Frontend & CSS
Design in the browser — colors, layout, shadows, favicons, and safe-area insets.
Git & DevOps
The config and version-control chores between writing code and shipping it.
Why browser-based, and why one toolbox
Most developer utilities live on a different website — JSON on one, JWTs on another, a random formatter for SQL. That means pasting potentially sensitive data into whichever site ranks that day. consolelog.tools puts the everyday utilities in one keyboard-first place and runs them on your machine, so your input stays with you.
Runs in your browser
Tools process input locally with JavaScript — we never see your data, tokens, or output.
No signup, no tracking
No accounts, no email gates, no per-tool paywalls. Open the page, do the thing, leave.
Fast and keyboard-first
Sub-100ms responses and a ⌘K command palette that jumps to any of the 300+ tools.
Frequently asked questions
Online developer tools are small, single-purpose utilities that run in your web browser instead of as installed software — a JSON formatter, a JWT decoder, a Base64 encoder, a regex tester, a color converter, and so on. consolelog.tools collects 300+ of them in one place so you don’t have to keep a bookmark folder of scattered single-tool sites.
Yes. Every tool is free to use with no signup and no account. There are no per-tool paywalls and no usage caps on the utilities themselves — open a page and use it.