Image guides
How image formats, compression, colour and metadata actually work — written to be useful whether or not you ever use a tool on this site.
Formats
4 guides- Formats · 6 min read PNG vs JPG vs WebP vs AVIF: which format should you actually use? A practical comparison of the four image formats that matter in 2026 — what each one is good at, what it costs you, real file-size numbers, and which to pick for photos, logos, screenshots and transparency. Read the guide
- Formats · 6 min read How image compression actually works What lossy compression is really doing to your pixels, why quality 80 looks identical to 100, where artefacts come from, and how to hit a target file size without visible damage. Read the guide
- Formats · 5 min read How transparent backgrounds actually work What an alpha channel is, why cut-outs get white or black fringes, the difference between straight and premultiplied alpha, and which formats can carry transparency at all. Read the guide
- Formats · 6 min read Why your photo looks different on every screen sRGB, Display P3 and Adobe RGB, what an embedded colour profile does, why exported images sometimes look washed out or oversaturated, and what to use where. Read the guide
Editing
2 guides- Editing · 5 min read How to resize images without losing quality What resampling actually does, why downscaling is safe and upscaling is not, which algorithm to pick, and the honest limits of AI upscalers. Read the guide
- Editing · 5 min read The right image size for every social platform Current dimensions and aspect ratios for Instagram, X, LinkedIn, Facebook, YouTube, TikTok and Pinterest — plus why platforms recompress your images and how to lose the least quality. Read the guide
Photography
2 guides- Photography · 6 min read How to photograph products for Amazon, eBay and Etsy What marketplace image rules actually require, how to light a product with two lamps and a sheet of paper, and the shot list that converts — written for sellers photographing at home without a studio. Read the guide
- Photography · 6 min read How to photograph anything for a clean cut-out Background removal quality is decided when you take the photo. What separates edges cleanly, why hair and glass are hard, and how to shoot so the cut-out works the first time. Read the guide
Privacy
3 guides- Privacy · 5 min read What EXIF data reveals about you, and how to remove it Every photo carries hidden metadata: GPS coordinates, device serial numbers, timestamps and more. What is actually in there, which platforms strip it, and how to remove it before you share. Read the guide
- Privacy · 5 min read How to redact a screenshot safely Blur and pixelation have both been reversed in real cases. What actually works, why mosaic filters fail against known fonts, and the one method that cannot be undone. Read the guide
- Privacy · 5 min read On-device vs cloud image tools: what happens to your photo What 'free online image tool' usually means for your file, what browser-based processing changes, and an honest account of where each approach wins and loses. Read the guide
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