Developer Tools That Just Work

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JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting

B64

Base64 Encode/Decode

Encode text to Base64 or decode Base64 back to text

%20

URL Encoder/Decoder

Encode or decode URLs and query parameters

.*

Regex Tester

Test regular expressions with real-time matching and explanation

🕑

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates

📅

DateKit

Date difference, date math, and Unix converter in one focused app

💸

BudgetKit

Budget, savings, and debt payoff calculators for practical money planning

🧮

HealthKit

BMI, calorie, and macro calculators in one focused app

😴

SleepKit

Plan bedtime and wake-up windows around full sleep cycles

🎯

FocusKit

Plan deep-work sessions, schedule blocks, and reduce meeting drag

🛠

OpsKit

Model reliability targets, burn rate, and incident-response load

🎓

StudyKit

Track GPA, set exam targets, and plan study workload

💼

CareerKit

Compare offers, project raises, and plan compensation decisions

🏠

HousingKit

Model mortgage costs, affordability, and rent-vs-buy outcomes

🧾

TaxKit

Estimate quarterly taxes and paycheck take-home pay with custom rates

🚘

AutoKit

Estimate loan payments, commute costs, and total car ownership expenses

🗃

GitKit

Generate branch names, commit messages, and rebase plans for cleaner Git workflows

#

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes

■

Color Converter

Convert between HEX, RGB, HSL color formats with live preview

JWT

JWT Decoder

Decode and inspect JSON Web Tokens without sending them anywhere

±

Diff Checker

Compare two texts side-by-side and see the differences

A≠B

Text Compare

Find character-level differences between two texts

M→H

Markdown to HTML

Convert Markdown to clean HTML code

😀

Emoji Picker

Search and copy emojis with Unicode info

ID

UUID Generator

Generate random UUIDs (v4) with one click

***

Password Generator

Generate strong, cryptographically secure passwords

Aa

Lorem Ipsum Generator

Generate placeholder text for your designs and mockups

MD

Markdown Preview

Write Markdown and see the rendered HTML in real-time

CSS

CSS Minifier

Minify or beautify CSS code to optimize performance

&

HTML Entity Encoder

Encode and decode HTML entities and special characters

⏰

Cron Expression Parser

Parse cron expressions and see when jobs will run

CSV

JSON to CSV Converter

Convert JSON arrays to CSV format with download

YML

YAML Validator

Validate, format, and convert YAML to JSON

S{}

JSON Schema Validator

Validate JSON data against a JSON Schema

QR

QR Code Generator

Generate QR codes for URLs, text, and more

0x

Number Base Converter

Convert between binary, octal, decimal, and hex

Aa

Text Case Converter

UPPERCASE, camelCase, snake_case, kebab-case & more

IP

IP Address Lookup

Validate IPs, calculate subnets, and lookup details

SQL

SQL Formatter

Format and beautify SQL queries with proper indentation

</>

HTML Beautifier

Format, indent, and minify HTML code

JS

JavaScript Minifier

Minify or beautify JavaScript code with size stats

JS

JavaScript Beautifier

Format and beautify JavaScript code

■

CSS Gradient Generator

Create beautiful CSS gradients with live preview

IMG

Image to Base64

Convert images to Base64 data URIs for embedding

$.x

JSON Path Finder

Find JSON paths with interactive tree view

API

HTTP Request Tester

Send HTTP requests with headers, auth, and body — like a mini Postman

📷

Code Screenshot

Create beautiful code screenshots with syntax highlighting and themes

A#

ASCII Art Generator

Turn text into ASCII art with 6 FIGlet-style fonts

↔

JSON Diff & Compare

Deep compare JSON objects with path-level diff highlighting

.*+

Regex Debugger

Debug regex with match highlighting, pattern explainer & code generation

▣

CSS Box Shadow Generator

Visual box-shadow editor with multiple layers, presets & undo/redo

RWX

Chmod Calculator

Interactive Linux file permissions calculator with visual display

JWT+

JWT Generator

Create and sign JSON Web Tokens with the Web Crypto API

TBL

Markdown Table Generator

Create Markdown tables visually with CSV/TSV import

SVG

SVG Optimizer

Optimize and clean SVG files to reduce file size

TOML

TOML Validator

Validate, format, and convert TOML to JSON

B64

Base64 Image Viewer

Encode images to Base64 or decode Base64 to images

Y⇄J

JSON ↔ YAML Converter

Convert between JSON and YAML formats

H→M

HTML to Markdown

Convert HTML to clean Markdown syntax

URL

URL Parser

Parse and analyze URL components

🌲

JSON Viewer

Interactive JSON tree viewer with search and path display

✓

JSON Validator

Validate JSON syntax and auto-fix common errors

XML

XML Formatter

Format, validate, and explore XML with XPath support

X⇄J

XML ↔ JSON Converter

Convert between XML and JSON formats

⏱

Crontab Generator

Build cron expressions visually with a friendly interface

flex

Flexbox Playground

Visual CSS Flexbox layout generator with live preview

JSX

HTML to JSX

Convert HTML to React JSX syntax

TS

JSON to TypeScript

Generate TypeScript interfaces from JSON

px

CSS Units Converter

Convert between px, rem, em, vh, vw units

TW

Tailwind CSS Lookup

Search Tailwind classes and see CSS output

W#

Word Counter

Count words, characters, sentences, and reading time

META

Meta Tag Generator

Generate SEO meta tags, OG tags & Twitter cards with previews

IMG

Placeholder Image

Generate placeholder & dummy images in any size and format

/-/

URL Slug Generator

Create SEO-friendly URL slugs from text

▦

CSS Grid Generator

Visual CSS Grid layout builder with named areas

⏰

Epoch Converter

Convert Unix timestamps to dates and back

Go

JSON to Go Struct

Convert JSON to Go struct definitions

Dart

JSON to Dart

Generate Dart classes from JSON for Flutter

🔄

Image Converter

Convert images between PNG, JPG, WebP, GIF

FAV

Favicon Generator

Create favicons from text, emoji, or images

OCR

Image to Text (OCR)

Extract text from images with OCR

CSS

CSS Beautifier

Format and beautify CSS code

MIN

HTML Minifier

Compress and minify HTML code

X←J

JSON to XML Converter

Convert JSON data to XML format with customizable options

SQL

SQL Playground

Write and run SQL queries in the browser with SQLite

JS

JavaScript Playground

Run JavaScript code in a sandboxed environment

RE

Regex Pattern Library

Common regex patterns ready to copy and use

■

CSS Color Name Lookup

Browse all 148 CSS named colors with details

""

JSON Stringify

Stringify & parse JSON with escape handling

s/./

Regex Find & Replace

Find and replace text using regex patterns

🔐

JS Obfuscator

Obfuscate & deobfuscate JavaScript code

</>

HTML Live Preview

Write HTML/CSS/JS with instant live preview

■

CSS Color Converter

Convert between all CSS color formats

DNS

DNS Lookup

Check DNS records for any domain online

⬟

CSS Clip-Path Generator

Create custom CSS shapes visually

▶

JavaScript Runner

Online JS code playground with console

PDF

PDF to Text

Extract text content from PDF files

A↓

JSON Sorter

Sort JSON keys alphabetically

🧙

Crontab Guru

Visual cron schedule builder

B64

Base64 File Encoder

Encode any file to Base64

tag

Git Tag Complete Guide

Create annotated release tags, publish semver versions, and build safer CI/CD rollback flows.

squash

Git Squash Commits Complete Guide

Use interactive rebase, fixup plus autosquash, and merge --squash safely to keep PR history clean.

window

Merge Queue Post-Reopen Monitoring Window Guide

Run guardrail monitoring windows after intake reopen and trigger immediate re-freeze on hard breach signals.

reopen

Merge Queue Post-Expiry Reopen Criteria Guide

Reopen queue intake safely after expiry defaults with objective restore gates, sign-off policy, and re-freeze triggers.

expiry

Merge Queue Cutoff Window Expiry Enforcement Guide

Enforce restore-or-freeze defaults when cutoff decision windows expire without executable owner proof.

cutoff

Merge Queue Escalation Decision Cutoff Guide

Apply hard authority-transfer gates when ACK timeout breaches recur across rollback incidents.

ack

Merge Queue ACK Timeout Remediation Runbook

Remediate missed ACK deadlines with timer-based handoffs, escalation tiers, and recovery templates.

route

Merge Queue Threshold Breach Alert Routing Playbook

Route closure-threshold breaches with severity-based owner handoffs, escalation SLAs, and actionable alert templates.

kpi

Merge Queue Closure Quality Metrics Dashboard

Set recurring-incident thresholds and escalation triggers to keep merge queue closure quality measurable.

close

Merge Queue Appeal Outcome Closure Template

Finalize denial appeals with owner-assigned actions, UTC deadlines, and 24h/7d/30d follow-up checkpoints.

appeal

Merge Queue Denial Appeal Escalation Path

Escalate contested extension denials with tier ownership, UTC response SLAs, and audit-safe final decision macros.

deny

Merge Queue Deny Extension vs Restore Baseline

Use this evidence checklist to reject weak extension requests and restore baseline protections with auditable ownership.

extend

Merge Queue Expiry Extension Reapproval: Decision Flow

Use a time-boxed reapproval flow for prolonged rollback incidents to avoid silent bypass extensions and policy drift.

proof

Merge Queue Approval Evidence Template: Incident Comment Macros

Copy-paste PR comment template for rollback incidents with dual approval, explicit expiry, and restoration ownership.

owner

Merge Queue CODEOWNERS Approval Deadlock: Rollback Incident Guide

Incident runbook to unblock rollback PRs when required code owners are unavailable in GitHub merge queue.

review

Merge Queue Stale Review Dismissal: Fix Rollback Approval Loops

Incident runbook to stop rollback PR approvals from being dismissed as stale after merge queue updates and policy churn.

name

Merge Queue Required Check Name Mismatch: Fix Waiting for Status

Incident runbook to align required-check names with merge queue workflows and unblock rollback PRs stuck on waiting status.

bypass

Merge Queue Emergency Bypass Governance: Approval Criteria

Governance runbook for rollback incidents: dual approval, temporary policy deltas, expiry windows, and audit-safe bypass execution.

timeout

Merge Queue Required Checks Timed Out or Cancelled

Incident runbook to classify timeout vs cancellation loops and unblock rollback PRs in GitHub merge queue safely.

flake

GitHub Merge Queue Flaky Required Checks: Stabilization Guide

Incident runbook to stabilize random required-check failures and land rollback PRs without policy bypass.

loop

GitHub Merge Queue Checks Keep Restarting: Requeue Loop Guide

Incident playbook to stop rollback PR requeue loops caused by branch churn, flaky checks, and policy invalidation.

SLO

Merge Queue Runner Saturation vs Queue Starvation

SLO-based incident guide to separate runner backlog from queue churn and unblock rollback PRs safely.

trigger

GitHub Merge Queue merge_group Trigger: Checks Never Start

Fix queue checks stuck in pending forever by wiring merge_group events and safe job conditions in GitHub Actions.

pending

GitHub Merge Queue Pending Checks: Rollback PRs Waiting Forever

Incident runbook for rollback PR checks that never start: merge-group CI triggers, runner latency, and queue-safe fixes.

stuck

GitHub Merge Queue Rollback Stuck: Unblock Incident Reverts Fast

Rollback PR stuck in merge queue? Use this queue-safe runbook to triage pending checks and unblock incident recovery fast.

queue

GitHub Merge Queue Rollback: Required Checks Guide

Required checks failing on rollback PRs? Queue-safe incident workflow to ship revert fixes without force-push.

-m

Git Revert Wrong Mainline Parent: Recovery Guide

Fix wrong -m rollback safely: revert the bad revert, choose correct parent, and complete recovery without force-push.

reapply

GitHub Revert the Revert: Reapply a Rolled Back PR Safely

Bring back reverted PR changes with exact GitHub UI and CLI revert-the-revert workflows for shared and protected branches.

conflict

GitHub Revert Conflict: Resolve Merge Conflicts and Finish Rollback

Revert conflict on GitHub? Practical UI and CLI workflow to resolve conflicts and finish rollback safely on shared branches.

queue

GitHub Protected Branch Revert: Safe Rollback with Merge Queue

Practical rollback workflow for protected branches: PR-only flow, required checks, and merge queue-safe revert paths.

btn

GitHub Revert Button Missing? Fix It and Roll Back Safely

No Revert button on a commit or merged PR? Diagnose why and use exact rollback commands for merge, squash, and rebase cases.

PR

GitHub Revert Pull Request: Undo a Merged PR Safely

Rollback merged PRs safely with GitHub Revert flow, plus CLI fallback for merge, squash, and rebase merge edge cases.

GH

Revert a Commit on GitHub: Web UI + Git CLI

Revert bad commits on GitHub using commit/PR Revert buttons, with exact CLI fallback for merge and conflict cases.

push

Git Undo Pushed Commit: Safe Revert Workflow

Exact git revert commands for undoing pushed commits safely: single commit, ranges, merge rollback, and conflict recovery.

revert

Git Revert: Undo Pushed Commits Safely

Safe rollback workflows for shared branches: revert one commit, ranges, merges, and revert-the-revert recovery.

HEAD~1

Undo Last Commit in Git: Keep Changes or Remove Commit Safely

Exact commands for git reset --soft/--mixed/--hard, plus when to use git revert on pushed branches.

add

Undo git add: Unstage Files Safely

Unstage one or all files with git restore --staged, compare with git reset HEAD, and avoid destructive undo mistakes.

reset

Git Reset: Soft, Mixed, Hard & Keep

Undo commits safely: --soft/--mixed/--hard/--keep, unstage changes, reset to origin, and recover with reflog.

clean

Git Clean: Remove Untracked Files Safely

Safely remove untracked files and folders: dry runs (-n), directories (-d), ignored files (-X/-x), and interactive mode.

restore

Git Restore: Unstage & Discard Changes

Undo local file changes safely: unstage files, discard edits, restore from commits/branches, and use --patch.

reflog

Git Reflog: Recover Lost Commits (Rescue Guide)

Recover lost commits after reset --hard, rebase, amend, and branch deletion with HEAD@{n} recipes.

-m

Git Revert a Merge Commit: Undo a Merge Safely

How git revert -m works, choosing the mainline parent, and how to re-merge later.

merge

Git Merge vs Rebase: Which Should You Use?

Merge preserves context; rebase creates a linear history. Fast-forward vs merge commits, pull --rebase, and safe workflows.

revert

Git Cherry-Pick vs Revert: Which Should You Use?

Copy commits across branches vs safely undo pushed commits. Backport + merge-revert workflows with examples.

diff

Git Diff: The Complete Guide for 2026

Staged vs unstaged, commit/branch comparisons, whitespace options, difftool, and patch workflows.

log

Git Log: The Complete Guide for 2026

Ranges, filters, searching, file history, diffs, graph view, and custom pretty formats.

blame

Git Blame: The Complete Guide for 2026

Track who changed a line, follow renames, ignore formatting commits, and trace moved code with -M/-C and ignore-revs.

λ

AWS Lambda: The Complete Guide for 2026

Handler functions, event sources, layers, cold starts, SAM, monitoring, and cost optimization.

K8s

Kubernetes Pods: The Complete Guide for 2026

Pod YAML spec, init containers, probes, resource limits, ConfigMaps, volumes, and debugging.

{ }

JSON Format: Complete Guide for 2026

Master JSON syntax, data types, and best practices. JSON vs XML vs YAML and more.

MD

Markdown: Complete Guide & Cheat Sheet

Every Markdown syntax element with examples. GitHub, Discord, Slack flavors covered.

grid

CSS Grid: The Complete Guide for 2026

Master CSS Grid from basics to advanced: named areas, auto-fit, responsive patterns.

⏰

Unix Epoch Time Explained

What is epoch time, the Y2038 problem, and timestamp conversion in every language.

SVG

SVG Optimization: Complete Guide

Reduce SVG file sizes by 60-80% with optimization techniques and best practices.