Developer Tools

JSON, XML, CSV, Base64, URL and YAML — formatting, converting and debugging everyday data formats entirely in your browser.

Aug 16, 2026·3 min read

JSON to XML: the reverse conversion, and why it's messier than XML to JSON

JSON has no attributes, no mixed content, and no inherent root element. Wrapping it back into XML means inventing structure that JSON never had.

Aug 16, 2026·3 min read

CSV to XML: wrapping flat rows in structured elements

Going from CSV to XML means making decisions CSV never had to — what the root element is called, and whether columns become elements or attributes.

Aug 16, 2026·3 min read

CSV to Excel: why a .xlsx isn't just a fancier CSV

Opening a CSV in Excel and saving as .xlsx isn't the same operation as converting it properly — here's where the difference actually shows up.

Aug 16, 2026·3 min read

Generating TypeScript types from XML: why hand-writing them doesn't scale

Interfaces hand-written against a sample document drift the moment the real data has one more optional field. Generating from a live example keeps them honest.

Aug 16, 2026·3 min read

XML to SQL: turning a data export into INSERT statements

Bulk-loading an XML export into a database usually means generating a batch of INSERT statements — here's what to check before you run them.

Aug 16, 2026·3 min read

XML to Markdown: turning structured documents into readable text

Sometimes the point isn't machine processing at all — it's making an XML export readable in a pull request, a wiki, or a chat message.

Aug 16, 2026·3 min read

Generating a JSON Schema from XML: what you gain and what you lose

Inferring a schema from one example document is a starting point, not a finished contract. Here's what an inferred schema does and doesn't tell you.

Aug 16, 2026·3 min read

XML to CSV: flattening nested data into rows and columns

CSV has no concept of nesting. Converting from XML means deciding how deeply-nested elements become flat column names.

Aug 16, 2026·3 min read

XML escaping: what < and & entities are actually for

Five characters break XML syntax if left unescaped. Here's what each escape means and when CDATA is the better tool for the job.

Aug 16, 2026·3 min read

Why comparing two XML files line-by-line gives false positives

The same data, formatted slightly differently, looks completely different to a text diff. Here's what's actually happening and how to work around it.

Aug 16, 2026·4 min read

XPath for beginners: finding data inside XML without parsing it by hand

A handful of XPath patterns cover most real-world lookups. Here's the syntax that actually gets used day to day.

Aug 16, 2026·3 min read

"Valid XML" means two different things — here's the distinction

Well-formed and schema-valid are not the same claim. Most validators only check the first one, and that's worth knowing before you trust a green checkmark.

Aug 16, 2026·3 min read

XML formatting vs minifying: when each one is the right move

Same document, two opposite goals — one for a human to read, one for a wire to carry as few bytes as possible.

Aug 15, 2026·3 min read

YAML vs JSON: picking the right format for config files

Both formats can represent the same data. The real difference is who's going to read and edit the file by hand.

Aug 14, 2026·3 min read

Turning a CSV export into JSON your API can use

Spreadsheet exports and JSON APIs speak different dialects. Here's what to watch for when bridging the two — types, headers, and empty cells.

Aug 13, 2026·3 min read

URL encoding: when you need it and how to get it right

Percent-encoding rules are simple in theory and easy to get subtly wrong in practice — especially around spaces, plus signs and reserved characters.

Aug 12, 2026·3 min read

Base64 encoding explained: what it's for (and what it isn't)

Base64 is not encryption, and it's not compression. It's a way to represent binary data as plain text — here's exactly where that's useful.

Aug 11, 2026·4 min read

Converting XML to JSON: what actually changes

XML and JSON model data differently enough that a naive conversion can quietly lose information. Here's what to check before you trust the output.

Aug 10, 2026·4 min read

JSON formatting: why pretty-printing matters (and how to do it safely)

Minified JSON is fast to transmit and painful to read. Here's what a formatter actually does, and why pasting API responses into random websites is a bad habit.

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PDF Tools

Everyday PDF workflows — merging, splitting, compressing, organising and page numbering, all running in your browser without uploading files.

Image Tools

Working with JPG, PNG, WebP and friends — formats, conversions, compression, resizing and watermarks, processed locally in your browser.

Convert to PDF

Turning Word, PowerPoint, Excel, HTML and image files into clean, shareable PDFs that look identical on every device — without uploading.

Convert From PDF

Editing PDFs in Word, extracting tables to Excel, turning PDF pages into editable slides or images — without sending your documents to a server.

Security & Productivity

Protecting, unlocking, signing, OCR'ing and watermarking PDFs — plus why privacy-first, browser-based tools matter for confidential documents.

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