Free Browser-Based SEO and Developer Tools

Choose an SEO or developer tool

SEO data

Clean keyword and URL inputs before they enter a crawl, import, or reporting workflow.

Keyword list cleanerClean messy keyword lists and choose the output format.URL list normalizerNormalize mixed URL lists and control the final format.

Technical SEO

Check directives and search-result inputs before they reach a crawler or production template.

Robots.txt testerTest a crawler and full URL against pasted robots rules.SERP snippet previewPreview a title, URL, and meta description together.

Agents and MCP

Inspect protocol payloads and tool definitions without sending them to a server.

MCP JSON-RPC validatorCheck JSON copied from an MCP inspector, SDK, or log.

Developer utilities

Small browser tools for structured data, identifiers, hashing, and repeatable test cases.

JSON formatterFormat and validate JSON, API, and SEO export data.UUID generatorGenerate secure v4 UUIDs instantly.SHA-256 hashCreate SHA-256 hashes from text.Simple test case builderTurn one expected result into a short test case.Run manifest verifierVerify saved input, output, and settings receipts from a workbench run.

Inputs stay in your browser.

The tools run in your browser. DevAwesome does not send inputs to an API or store them in browser storage.

Read the privacy details See how tools are tested Use a complete workflow

Practice

Read code. Spot the syntax clue.

This is a short learning exercise, not a data utility. Identify eight programming languages from original samples and inspect the explanation behind every answer.

Try the programming-language quiz