Online data tools

Make structured data easier to inspect or move it between formats. Format JSON for reading, check its syntax, or convert tabular data between CSV and JSON.

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PDF to Markdown

Convert PDF text to Markdown. Review, edit and download an .md file in your browser.

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Merge PDF

Combine PDF files into one document for free. Reorder files, preview pages and download your merged PDF without uploading.

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Bulk file renamer

Rename batches of files with prefixes, replacement and numbering. Preview every name and download renamed copies in a ZIP.

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Free JWT Secret Key Generator

Create a secure JWT secret key for HS256, HS384 or HS512. Choose a key size and copy your signing secret in Base64URL, Base64 or hex.

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CSV comparison

Compare two CSV files side by side, highlight row differences and download a text report.

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JSON formatter and validator

Beautify, validate or minify JSON. Keep large numbers, key order and duplicate keys intact, directly in your browser.

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CSV to JSON converter

Convert CSV to JSON and JSON to CSV. Choose separators, preserve leading zeros and copy or download the result locally.

Format data or change its structure

Choose the JSON formatter when you already have JSON and want to read it more easily or check whether its syntax is valid. Formatting adds structure to the presentation; it does not verify that the values are correct for your application.

Choose the CSV/JSON converter when you need rows and columns in another format. Review the source, select the conversion direction, and check the result before using it elsewhere.

A grid of data cells reorganized into a branching structure.

Check the result before using it

Pay attention to column headings, empty cells, quoted values and identifiers with leading zeros. Different applications interpret these values differently, so compare a few representative records after conversion.

Valid JSON is not the same as data that matches a particular API or schema. Check required fields and value types against the system that will receive your data.

A magnifying lens inspecting individual cells in a structured record.

Frequently asked questions