Image Compressor

Optimise Images for Social Media & Content Platforms

Every major platform re-encodes uploads on ingest. Start from a clean, correctly-sized source and preserve as much visual quality as possible.

Social and content platforms all follow the same pattern: they enforce their own dimensions, they re-encode uploads to their internal bitrate, and they downscale anything larger than needed. That means uploading a raw 4000-px camera JPEG is almost never optimal — the platform's server-side scaler is a black box, and the result is often softer than uploading at the platform's actual render dimension.

This hub groups every platform-specific preset in one place: CMS templates (WordPress featured, Shopify collection banners, Substack cover), commerce (Etsy listing, eBay, Amazon marketplace), community (Reddit, Discord, Slack), professional showcase (Behance, Dribbble), and real-estate & maps (Airbnb, Rightmove, Zoopla, TripAdvisor, Google Business Profile).

For classic social feed sizing (Instagram square, Facebook cover, LinkedIn banner, X card), the dedicated platform pages under /instagram-image-sizes and siblings cover exact dimensions per surface. The presets in this hub cover the workflow surfaces those size guides don't — 'compress for WordPress featured image', 'resize for Shopify collection banner', 'format for Etsy listing', and so on.

CMS & content platforms

WordPress, Shopify, Substack, Medium, Ghost, Squarespace, Wix and Webflow — presets tuned to each template's render dimensions.

Marketplace & commerce

Etsy, eBay, Amazon and secondhand marketplaces — each with strict per-listing size and dimension rules.

Community, professional & real estate

Reddit, Discord, Slack, Behance, Dribbble — plus real-estate platforms with strict per-photo dimensions.

Related tools

Frequently asked questions

Does the platform re-compress my uploaded image?
Yes — nearly every social and content platform re-encodes uploads to its internal bitrate. Uploading at the platform's actual render dimension (rather than 4000-px straight from camera) means only one round of lossy re-encoding, which preserves visible quality.
What's the safest format for social platforms?
JPEG for every platform. Some platforms support WebP or HEIC, but JPEG is universally accepted and predictably decoded by every social CDN scraper. Use PNG only for images with true transparency or non-photographic content (logos, screenshots).
Should I resize before or after compressing?
Resize first (down to the platform's render dimension), then compress. Compressing a 4000-px image and then downscaling it re-quantises the data twice; downscaling first is always the higher-quality path.
What's the sensible default quality?
Quality 82 in JPEG or WebP is the sweet spot for social feed content — visually indistinguishable from quality 95 at half the file size. For editorial or lookbook content, quality 88 gives more preserved detail.
Is my image uploaded anywhere?
No. Every preset compresses in your browser. Your image only leaves your device when you upload it to the destination platform yourself.