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Task-focused utilities for everyday web development, debugging, and data transformation.
Decode JWT headers and payloads for authentication debugging and token inspections.
Encode/decode Base64 for strings and common data workflows, including URL-safe cases.
Lookup MIME types and file extensions for content-type headers and upload handling.
Inspect keyboard event values including key, code, and modifier states.
Convert text into URL-safe slugs for routes, filenames, and identifiers.
Edit rich text and view generated HTML source in a browser-based workflow.
Parse user-agent strings into browser, OS, engine, device, and CPU details.
Browse HTTP status code references and meanings for API and web debugging.
Test regex patterns with match previews and iterative debugging support.
Convert SQL INSERT statements into JSON objects for migration and API workflows.
Compare two JSON structures and inspect semantic differences quickly.
Compare two texts side-by-side with character-level highlighting. Ignore whitespace, export as patch file.
Transform JSON arrays into CSV for spreadsheet analysis and exports.
Format and minify HTML for readability, debugging, and optimization tasks.
7 harmony modes, image extraction, WCAG contrast checker, export to CSS/Tailwind/SCSS/JSON.
Convert color values between HEX, RGB, and HSL for frontend development.
Convert HTML markup into Markdown for docs, blogs, and content migration.
Write Markdown and preview rendered output live for documentation workflows.
Estimate GPU hours, training time & cloud costs for training large language models across providers.
Estimate monthly costs for Workers requests, CPU time, KV, R2 & Durable Objects with scaling projections.
Build cron expressions visually with 25+ presets, English descriptions, and next run time preview.
API and authentication debugging
Format conversion for content and data pipelines
Frontend utility workflows for colors, slugs, and markup
Regex and parsing checks during implementation
Documentation and editor workflows
High-performing developer tool pages prioritize immediate utility, clear labels, and predictable output. This category is structured around that expectation to reduce time-to-result.
Instead of generic content, each page focuses on a specific developer problem with concise guidance, schema-backed metadata, and relevant internal links for next-step workflows.