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On-page SEO check

Check the title, headings, links and indexation signals of one public page.

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GEO and AI content check

Review company facts, authorship and content structure. This is a rule-based check, not an AI ranking prediction.

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robots.txt generator and tester

Generate crawl rules, then test a path against the chosen user-agent group. Blocking a crawl does not remove an indexed URL.

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XML sitemap generator

Paste one absolute URL per line. Duplicates are removed and XML characters are escaped. This tool does not crawl your website.

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Image compressor

Reduce image dimensions and choose output quality. Compare the downloaded file at its actual display size before replacing the original.

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WebP converter

Convert JPEG, PNG or WebP files in your browser. Transparent pixels are retained when the chosen format supports them.

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Image resizer

Set a maximum width. The aspect ratio stays the same and smaller files are not enlarged.

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JSON-LD validator and formatter

Paste JSON-LD without script tags. Syntax checks do not guarantee search eligibility or rich results.

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UTM link builder

Add campaign parameters while preserving existing query values and the fragment. Keep personal data out of tracking parameters.

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JSON formatter

Validate and format JSON locally. Large integer values beyond JavaScript’s safe range are rejected to avoid silent rounding.

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URL encoder and decoder

Encode or decode a URL component. This is component encoding, so slashes and other separators are escaped too.

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Base64 and Base64URL converter

Encode Unicode text as UTF-8 bytes or decode valid UTF-8 Base64. Base64 is an encoding, not encryption.

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SHA-256, SHA-384 and SHA-512 hashes

Hash text or a local file with Web Crypto. Matching a checksum verifies bytes, not the identity or safety of the file.

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UUID v4 generator

Create random identifiers with Web Crypto. Use a uniqueness constraint as well when saving records to a database.

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Secure random password generator

Generate passwords with a cryptographic random source. Each password includes upper and lower case, a digit and a symbol. Results stay in this tab.

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Text statistics and word frequency

Count words, Unicode code points and recurring terms. A frequency table is descriptive and does not measure writing quality.

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