Guides & Tutorials
The PixelResize Blog
Practical, up-to-date guides on image tools, file formats and SEO for 2026.
How to Remove Image Backgrounds Privately With AI in 2026
Get clean, transparent cut-outs with AI that runs entirely on your device — no uploads, no accounts, full privacy.
Read the full guideHow to Watermark Images to Protect Them in 2026
A practical guide to watermarking — what text to use, the right opacity and placement, and the realistic limits of image protection.
Read the full guideHow to Pick Colors From an Image (HEX & RGB) in 2026
Sample exact HEX and RGB values from any image to match brand colors and build palettes — right in your browser.
Read the full guideHow to Flip and Mirror Images in 2026
Horizontal or vertical? Here's the difference, when each is useful, and how to fix backwards selfies in one click.
Read the full guideHow to Rotate and Straighten Photos in 2026
Why some photos show up sideways on certain devices — and how a quick, lossless rotation fixes them everywhere.
Read the full guideHow to Crop Images for Social Media and the Web in 2026
Cropping to the right aspect ratio stops platforms mangling your images and makes link previews look professional. Here's how to get it right.
Read the full guideImage SEO in 2026: How to Optimize Photos for Google
Images are often the biggest thing slowing your pages down and an untapped source of search traffic. Here's a practical image SEO checklist for 2026.
Read the full guideHow to Convert PDF Pages to Images in 2026
Turn PDF pages into sharp PNG images you can drop into slides, posts and pages — without uploading confidential documents.
Read the full guideHow to Reduce Image File Size on iPhone and Android
Phone photos are huge, and uploads and email reject them. Here is how to shrink them on iPhone and Android — including the HEIC problem — without installing anything.
Read the full guideHow to Convert Images to PDF in 2026
Turn photos and scans into clean, multi-page PDFs for applications, receipts and portfolios — privately, in your browser.
Read the full guideAVIF vs WebP vs JPG: Choosing the Best Image Format in 2026
AVIF is smallest, WebP is the safe modern default, JPG is universal. Here is exactly when to use each format on the web in 2026 — with the trade-offs that actually matter.
Read the full guideHEIC to JPG: The Complete iPhone Photo Guide for 2026
Everything you need to know about Apple's HEIC format — why it causes problems, how to convert to JPG, and how to avoid the hassle entirely.
Read the full guideWhy Convert JPG to WebP for Faster Websites in 2026
Switching site images from JPG to WebP is one of the highest-impact image-SEO wins of 2026. Here's why, and how to do it safely.
Read the full guideHow to Compress a Photo to 20KB for Online Exam Forms
Exam portals with a 20KB cap reject almost everything. Here is how to get a photo and signature under 20KB while keeping them clear enough to pass validation.
Read the full guideWebP to JPG: How to Fix Compatibility Issues in 2026
WebP is great for the web but still trips up editors, printers and older apps. Here's when and how to convert WebP to JPG.
Read the full guideWhat Size Should a Passport Photo Be? A Country-by-Country Guide
Passport photo dimensions differ by country and confuse almost everyone. Here are the exact sizes in mm, inches and pixels, and how to prepare a compliant photo yourself.
Read the full guideConvert PNG to JPG: When, Why and How in 2026
PNG photos are often needlessly huge. Here's when converting to JPG is the right move, what happens to transparency, and how to keep quality high.
Read the full guideJPG vs PNG: When to Convert and Why
JPG and PNG solve different problems. Here's exactly when converting JPG to PNG helps — and when WebP is the smarter modern choice.
Read the full guideHow to Resize Images for the Web and Social Media in 2026
Exact pixel sizes for websites and every major social platform, plus how correct dimensions protect Core Web Vitals and keep your images sharp.
Read the full guideHow to Compress Images Without Losing Quality: The Complete 2026 Guide
A practical, no-nonsense guide to shrinking image file sizes in 2026 — which formats to pick, what quality settings actually matter, and how smaller images improve SEO.
Read the full guide