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Compress, merge, split, rotate, and convert PDF documents easily.

Resize, crop, compress, and convert images into multiple modern formats.

Count words, format cases, sort lines, clean formatting and analyze copy.

Compress archives, merge archives, split files, and verify file checksums.

Instant conversion between units of length, mass, temperatures, and data.

Accurate everyday math, percentage formulas, scientific tools, and age counts.

Generate meta tags, analyze keyword density, audit pages, and audit links.

Format JSON, validate HTML/CSS, test regular expressions, and encode base64.