Image format guides
The ImageToAnything blog helps you learn image compression, file format conversion, recommended file sizes, image optimisation for the web and how to keep your photos private. Every article is plain-English and links straight to the free, browser-based tool that does the job.
Featured guides
How to Reduce Image Size to 100KB Free Online
Step-by-step guide to reduce image size to 100KB in your browser — free, no upload. JPG vs PNG advice, common mistakes and FAQs for forms, email and uploads.
Read articleHow to Compress Images for Email Without Losing Quality
Practical guide to compressing photos for email — phone photo examples, JPG vs PNG, recommended sizes for Gmail, Outlook and Apple Mail. Free, browser-based.
Read articlePNG vs WEBP: Which Image Format Should You Use?
A practical comparison of PNG and WEBP — file size, quality, transparency, browser support, and when each format is the right choice.
PNGWEBPFormats8 min readUpdated May 12, 2026/blog/png-vs-webpRead articleWhat Is AVIF? A Simple Guide to the Modern Image Format
AVIF can be half the size of WEBP at the same quality. Here's what AVIF is, when to use it, and when JPG or WEBP is the safer choice.
AVIFFormats9 min readUpdated Apr 22, 2026/blog/what-is-avifRead articleWhy HEIC Photos Do Not Always Open on Windows
iPhones save photos in HEIC by default and Windows often refuses to open them. Here is why, and how to convert HEIC to JPG without paying for extensions.
HEICiPhoneWindows8 min readUpdated Mar 30, 2026/blog/heic-on-windowsRead articleHow to Compress Images Without Losing Too Much Quality
A practical guide to image compression: lossy vs lossless, choosing the right quality level, and shrinking files for the web without ugly artifacts.
CompressionOptimization9 min readUpdated May 2, 2026/blog/how-to-compress-imagesRead articleBest Image Format for Websites: JPG, PNG, WEBP, AVIF or SVG?
A no-nonsense guide to picking the right image format for the web — by image type, browser support, and what you are trying to achieve.
WebFormatsPerformance9 min readUpdated Apr 10, 2026/blog/best-image-format-for-websitesRead articleHow to Reduce an Image Under 100 KB
Government forms, online applications and job portals often cap uploads at 100 KB. Here is how to hit that limit without making your photo unrecognisable.
CompressionResize7 min readUpdated Feb 18, 2026/blog/reduce-image-size-under-100kbRead articleJPG Quality Explained: 60%, 75%, 90% and What They Mean
Quality settings on JPG are not a percentage of the original — they are a compression intensity. Here is what each level actually does to your image.
JPGCompression7 min readUpdated Mar 4, 2026/blog/jpg-quality-explainedRead articleWhy Are PNG Files So Large?
PNG is lossless, which is great for quality and terrible for file size. Here is why PNGs balloon and what to do about it.
PNGCompression7 min readUpdated Jan 22, 2026/blog/why-are-png-files-so-largeRead articleBest Image Sizes for Instagram, TikTok, YouTube, Facebook and Websites
Up-to-date image dimensions for every major social platform, plus the formats and aspect ratios that actually look good when uploaded.
Social MediaResizeCrop8 min readUpdated May 18, 2026/blog/image-sizes-for-social-mediaRead articleAre Online Image Converters Safe? Privacy Tips Before Uploading Files
Most online converters upload your files to a server. Here is what that means for your privacy, and how to convert images without sending them anywhere.
PrivacySecurity8 min readUpdated Apr 30, 2026/blog/image-privacy-online-toolsRead articleThe Best Image Format for the Web in 2026
AVIF, WEBP, JPG, PNG or SVG? A 2026 buyer's guide for choosing the right web image format based on browser support, file size, quality and tooling.
AVIFWEBPJPGPNGSVGPerformance12 min readUpdated Jun 10, 2026/blog/best-image-format-for-web-2026Read articleJPG vs PNG vs WEBP vs AVIF: The Complete Comparison
A side-by-side comparison of the four image formats that matter on the modern web — how they compress, when each wins, and how to choose between them.
JPGPNGWEBPAVIFFormats11 min readUpdated Jun 15, 2026/blog/jpg-vs-png-vs-webp-vs-avifRead articleImage Optimization for SEO: A 2026 Field Guide
How to optimise images for SEO and Core Web Vitals in 2026 — formats, sizing, alt text, structured data, lazy-loading and the mistakes that quietly hurt rankings.
SEOPerformanceCore Web VitalsAlt text13 min readUpdated Jun 18, 2026/blog/image-optimization-for-seoRead article