Basic robots file
User-agent: * Allow: / Sitemap: https://bytebench.dev/sitemap.xml
Valid robots.txt group with sitemap.
Frontend Tools
Robots.txt Validator
Validate robots.txt syntax and preview crawler directives locally.
At a glance: This robots.txt validator checks common robots.txt directives locally, including User-agent, Allow, Disallow, Sitemap, Crawl-delay, and unknown rule warnings. It helps catch missing user-agent groups, invalid sitemap URLs, and directive typos.
Your input is processed locally in your browser and is not uploaded to ByteBench servers.
Loading browser tool.
How to use this tool
- Paste or type your input into the tool area.
- Choose the mode or options that match your task.
- Review validation messages before copying the output.
- Use the example button when you want a known-good starting point.
Examples
Common use cases
- Review robots.txt before launch.
- Check sitemap directive URLs.
- Spot unknown crawler directives.
When to use this tool
Use this robots.txt validator page when you need to validate robots.txt syntax quickly during debugging, review, migration, or documentation work and want to keep raw input in your browser session.
If your task shifts, Sitemap Validator and URL Encoder and Decoder are usually the next useful tools.
Input and output expectations
- Expected input shape: Paste UI-oriented values such as HEX colors, snippets, or small frontend samples.
- Typical output: Readable frontend values and checks you can move into styles, design docs, or review comments.
- Quick input example: User-agent: * Allow: / Sitemap: https://bytebench.dev/sitemap.xml
- Quick output example: Valid robots.txt group with sitemap.
Common mistakes to avoid
- Choosing colors without checking contrast for text readability.
- Assuming one format is enough across all frontend systems.
- Skipping final visual checks in the actual UI context.
Notes and edge cases
Robots.txt is a crawl hint, not access control. Do not use it to protect private URLs or sensitive files.
For privacy-sensitive data, keep using the tool in a trusted browser session and avoid pasting secrets into shared screens, screenshots, browser extensions, or remote support sessions.
FAQ
Does this robots.txt validator upload my input?
No. This robots.txt validator runs in your browser and does not send your input to ByteBench servers.
What input format works best in this robots.txt validator?
Use clean robots.txt crawler directives input and run the example first when you want a known-good baseline. If your pasted data came from logs or docs, remove accidental wrappers before validating or converting.
How should I validate results from this robots.txt validator?
Review the status message, compare output with expected behavior, and run one quick edge-case check. ByteBench helps with utility work, but production-critical output should still be verified in your project pipeline.