Practical guides on getting data out of files — PDFs, images, archives and Windows installers — from the people who build the free tools.
To convert XML to JSON in your browser, parse the XML markup string into an in-memory DOM Tree using JavaScript’s native DOMParser API, recursively traverse element nodes and text nodes, map XML attributes to…
Read the guide →To extract a color palette and custom variables from CSS stylesheets, parse the stylesheet source code using a client-side regex or Abstract Syntax Tree (AST) extractor like the CSS Color Extractor to scan hexadecimal,…
Read the guide →To convert cURL commands to Python or JavaScript, extract command-line flags like -X for HTTP methods, -H for headers, -d for payloads, and -u for authentication. Map target URLs into Python requests or httpx…
Read the guide →To parse and explain cron expressions, evaluate the 5 positional fields—minute, hour, day of month, month, and day of week—from left to right, translating special characters (*, ,, -, /) into plain-English schedules using…
Read the guide →To decode a JSON Web Token (JWT) in your browser, split its three period-delimited Base64URL strings—header, payload, and signature—and decode the Base64URL data into JSON objects. You can decode JWTs securely in real time…
Read the guide →To extract client IP addresses and custom fields from server log files, parse raw Nginx or Apache access logs using regular expressions or client-side streaming tools like the Log Field Extractor to isolate IP…
Read the guide →To convert a JSON array or object to a CSV table, parse the key-value structures, flatten nested objects into dot-notation column headers (such as user.address.city), normalize heterogeneous array schemas across all records, escape reserved…
Read the guide →To convert SRT subtitles to plain text, strip the numeric sequence indices, timecode block markers (00:00:00,000 –> 00:00:00,000), and HTML formatting tags using an automated browser utility like the SRT Text Extractor. This processes…
Read the guide →To read a PEM certificate file, you must decode its Base64 container to access the underlying ASN.1-structured X.509 data, which exposes essential cryptographic metadata such as subject identity, issuer details, validity dates, and public…
Read the guide →To convert a Base64 string to an image, remove any Data URI prefix such as data:image/png;base64,, decode the remaining ASCII payload into binary bytes using window.atob(), wrap the byte array in a Blob with…
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