How to Batch Compress PNG Images to WebP While Keeping Transparency
Converting a folder of PNG files to WebP reduces file size without losing transparent backgrounds. Here is how to do it in one session without uploading anything to a server.
Guides and tips
Practical articles on image optimization, next-gen formats, web performance, and getting the most out of Pixscaler.
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How to Get Images Under a 200KB Upload Limit (Without Guessing)
Passport portals, job forms, and email caps often ask for files under 200KB. Here is how file size works, which formats help, and how Pixscaler compresses locally so you can tune quality and dimensions until the output fits.
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How to Fix 'Serve Images in Next-Gen Formats' in PageSpeed Insights
If Google PageSpeed is flagging your images, the fix is usually straightforward. Convert JPEGs and PNGs to WebP or AVIF and cut your file sizes by up to 80 percent.
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WebP vs AVIF: Which Image Format is Best for Your Website?
Both WebP and AVIF beat JPEG on file size. But they are not the same. Here is a plain breakdown of when to use each one, based on your browser support requirements and compression goals.
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Substack Newsletter Images: Width, Compression, and Why Huge Files Hurt Mobile Readers
Substack rewards readable posts. Learn sensible image widths, how heavy embeds feel on mobile data, and how to compress locally in the browser before you hit publish.
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Travel Blog Image Weight: Why Full-Resolution Galleries Cost You Mobile Readers
Readers on trains and roaming data abandon heavy galleries. Resize hero and inline images, prefer WebP or AVIF, and compress locally in the browser before you publish.
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AI-Generated Images for the Web: Sensible Export Sizes Before You Lose Detail
AI renders tempt huge exports. Learn how to pick pixel widths for heroes and cards, when upscaling wastes bytes, and how to compress WebP or AVIF locally in your browser.
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Core Web Vitals LCP: How Hero Image Width and Weight Slow Real Pages (and What to Change First)
LCP often is an image problem. Learn how intrinsic pixels, responsive markup, and kilobytes interact, then fix the hero with sizing, formats, and honest compression tradeoffs.
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Google Business Profile Photos: Logo, Cover, and Team Shots Without Blurry Upscaling Mistakes
Google Business Profile images represent your shop in Maps and Search. Upload sharp masters at sensible pixels, avoid upscaling, and compress JPEG locally before you publish.
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PNG vs JPEG for Website Screenshots: When Transparency Matters and When It Wastes Bandwidth
Screenshots are not all the same: UI chrome needs crisp edges, photos do not. Choose PNG, JPEG, or WebP with a simple decision framework and lighter blog delivery habits.
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Google Forms and School Portals: How to Shrink a Photo Upload When the Limit Is Unclear
Forms often say upload failed without naming KB limits. Resize first, compress JPEG with judgement, and keep student and ID photos local in the browser with Pixscaler Web Workers.
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How to Sanity-Check WebP and AVIF Output in Safari, Chrome, and Firefox Before You Publish
Next-gen formats save bytes, but previews lie. Test decode, transparency, and colour in real browsers on desktop and mobile before you flip production defaults.
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Image Dimensions for Open Graph and Twitter Cards: One Reference for Less Broken Previews
og:image and Twitter summary cards want a wide frame. Learn the common 1200x630 target, safe margins, file size habits, and local JPEG or WebP prep before deploy.
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Why "Free Online Image Compressors" Can Be a Privacy Risk (and Safer Client-Side Habits)
Many free compressors upload your file to a server by design. Learn what to look for, why client-side Web Workers matter, and habits that keep contracts and IDs off unknown infrastructure.
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WhatsApp Profile and Status Photos: What Gets Cropped and How to Pre-Frame Faces Safely
WhatsApp uses circular profile crops and tall status frames. Learn safe margins, export sizes, and local resizing habits without uploading private photos to unknown servers.
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Batch Resize Etsy Listing Photos in Your Browser: One Workflow for Consistent Shop Thumbnails
Etsy shoppers skim grids. Match aspect ratios, keep bytes sensible, and batch prep listing photos locally with Web Workers so prototypes and pack shots never hit unknown servers.
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Favicon and Apple Touch Icon Sizes in One Checklist (2026)
Modern browsers request many icon sizes. Learn what to export, what you can skip, and how to keep crisp masters without shipping huge PNGs from your static site root.
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From 4K to Docs: How to Downscale Screenshots for GitHub, Notion, and README Files
4K screenshots bloat repos and slow Notion. Learn sane widths for docs, when PNG beats JPEG, and how to batch downscale locally in the browser with Pixscaler Web Workers.
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Shopify Product Image Size in 2026: JPEG vs WebP vs AVIF for Speed and Zoom
Shopify product zoom wants pixels, mobile shoppers want kilobytes. Balance 2048 square masters, WebP delivery, and honest AVIF tradeoffs without slowing your store.
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JPEG Quality 80 vs 70: What You Actually Notice on a Retina Phone Screen
Quality sliders are not universal. Compare JPEG 80 and 70 on real photos, UI screenshots, and skin tones on a retina phone before you pick defaults for web and social.
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LinkedIn Document and Image Posts: Practical Pixel Sizes That Stop Awkward Cropping
LinkedIn crops feeds and document viewers differently. Export with safe margins, sensible JPEG quality, and predictable widths using presets like the LinkedIn post image size guide.
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Email Image Attachments That Still Open on Outlook: Sizes, Formats, and Safe Defaults
Outlook still shapes corporate inboxes. Keep JPEG attachments modest, avoid huge PNGs, and resize locally in the browser before you hit send on hotel Wi-Fi.
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How to Resize WordPress Featured Images Without a Plugin (Exact Pixels and Smaller Files)
Prepare WordPress featured images at the right pixels and weight without another plugin: export rules, responsive crops, and local compression with Web Workers in Pixscaler.
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Passport Photo Rejected for File Size or Dimensions: How to Fix Common Portal Errors
Portal rejections usually mean pixels, ratio, or kilobytes. Learn how to read vague errors, resize safely, and compress JPEG locally without uploading scans to unknown servers.