Developer Articles
12 articles tagged with Developer
wkhtmltopdf Is Archived. What to Use Instead
The repository went read-only in January 2023 with a CVSS 9.8 SSRF that will never be patched. Why the flaw is the shape of the tool rather than a missing fix, how to pick a replacement honestly, and the migration step most guides skip.
Read articleIf Your App Accepts SVG Uploads, Read This First
The same SVG can be harmless inside an img tag and a stored XSS hole at its own URL, with nothing about the file changing in between. Four defences that do not defend anything, and the three that do.
Read articleConverting Thousands of Files Through an API
A batch of 20 files costs one rate-limit slot instead of twenty, one corrupt file should not fail the other nineteen, and the limit that actually stops you is concurrency rather than requests per minute.
Read articleWhich API Errors to Retry, and Which Never To
Two different 429s that need opposite responses, a Retry-After that can legitimately be days long, and a class of 4xx that will fail identically no matter how many times you send it.
Read articleHow to Add File Conversion to Your App Without Storing User Files
Most conversion APIs hand you a job ID and keep the file in a bucket. Here is how to wire up conversion end to end - auth, endpoints, large files, errors and limits - with an API that never writes an upload to disk.
Read articleHow to Convert GPS & Map Files (GPX, KML, GeoJSON)
Exported a route as GPX but Google Earth wants KML? Here is how to convert between GPX, KML and GeoJSON in seconds - free, private, and with no software.
Read articleGPX vs KML vs GeoJSON: Which Map & GPS Format Should You Use?
Three formats, three different worlds - GPS devices, Google Earth and web maps. A clear comparison of GPX, KML and GeoJSON and how to convert between them.
Read articleHow to Convert Excel to CSV - The Complete Guide
Turn Excel spreadsheets (.xlsx, .xls) into clean CSV for data imports, database uploads and cross-platform compatibility. Free and private.
Read articleJSON vs CSV: When to Use Which Format
Both formats are popular, but they solve different problems. A clear comparison with real-world examples to help you pick the right one.
Read articleCSV vs JSON vs XML: Data Formats Explained Simply
Three popular data formats, three different use cases. A plain-language guide to picking the right one and converting between them.
Read articleYAML for Beginners: A Quick Start Guide
YAML powers Docker, Kubernetes, and CI/CD pipelines. Learn the basics in 5 minutes and never struggle with indentation again.
Read articleMarkdown to PDF: A Developer's Guide
Turn README files, documentation, and tech specs into professional PDFs. A practical guide for developers who live in Markdown.
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