// Guides
Guides
Practical explanations of the formats and rules behind everyday conversions: what they are, when they matter, and how to get them right.
E-invoicing in Europe in 2026: Peppol, UBL and Factur-X explained
Which countries require structured e-invoices, what Peppol, UBL and Factur-X are, and what a small business has to do.
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PDF/A explained: what archives, courts and authorities expect
What PDF/A requires, the difference between PDF/A-1, -2 and -3, and when you actually need it.
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DXF, DWG or SVG: which file a laser cutter, CNC machine or print shop wants
Which vector format to send to a laser, plasma, waterjet, CNC router or print shop — and how to prepare it so it cuts first time.
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JPG, PNG, WebP, AVIF or HEIC: which image format to use when
The trade-offs between JPG, PNG, WebP, AVIF, HEIC and GIF, and which one to pick for photos, logos, websites and email.
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From scan to editable text: how OCR works and how to get good results
How OCR reads a scan or photo, why it makes mistakes, and how to get clean, editable text first time.
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Converting files privately: what "in your browser" really means — and how to check it
The difference between uploading a file and converting it in your browser, and a simple test to check which one a site does.
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