How to Convert a PNG or JPG to SVG Without Losing Your Logo
Convert a PNG or JPG logo to a clean SVG: prepare the source, pick colours and smoothing, drop the background, check paths and size, finish in a vector editor.
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Guides, tutorials, and tips on Text Tools, Developer Tools, Image Tools and more. 120 practical articles from our free, privacy-first online tools.
How to Build a Color Palette from a Photo (and Actually Use It)
Extract a color palette from a photo the right way: choose the image, see how k-means extraction works, split dominant from accent colors, ship it as CSS.
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Base64 for Files: Data URIs, Binary Transport & the 33% Overhead
What types of files you can send as Base64, how much Base64 size overhead costs, when to use data URIs, and Base64 vs binary for storing and sharing documents.
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The Base64 Alphabet and Padding Explained (=, +, /)
Which characters are valid Base64, which are illegal, why a block can be illegible, why it can start with /, and how the = padding works, with an example.
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Control Characters: What LF, CR and NUL Really Do
The first 32 ASCII codes are not characters you type. Here is what LF, CR, TAB and NUL actually mean, why CRLF still exists, and how to find invisible ones.
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Is Base64 Secure? Encoding vs Encryption Explained
Is Base64 secure? No — Base64 is an encoding, not encryption. Learn how encoding vs encryption vs hashing differ and how to actually protect data.
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Why Your ñ Shows Up as ñ
Mojibake has one common cause: UTF-8 bytes read as Latin-1. Here is how to recognise the pattern, trace it to the layer that broke, and confirm the fix.
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ASCII, Unicode and UTF-8: Planes, Normalization and Sort Order
Past the basics of ASCII and UTF-8: how the standard was renamed, how the 17 Unicode planes are laid out, and why normalization breaks sorting and search.
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"6106 Non-Manifold Edges" Is Not an Error Code
Your slicer reports a number, not a code — it is counting broken edges. Here is what the number means, why searching it finds nothing, and how to find the few places that matter.
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How Many Photos Do You Actually Need for a Photo Mosaic?
How many photos a mosaic really needs, why 20 photos lean on the tint and 300 lean on the match, and how to set tint, variety and dithering for your library.
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Annotate and Record Over Your Screen, Live in the Browser
Put your live screen behind an infinite whiteboard, draw over it and record the result — all in your browser. Nothing is uploaded, and no screen is ever saved.
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Using Your Own Color Palette in Paint by Numbers
Set a custom color palette paint by numbers workflow: match your own acrylics, hex codes, or brand colors instead of an auto-picked palette.
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