Resize any image to 1200×628 pixels (1.91:1 aspect ratio) in your browser — no upload, no login, no paywall. Pure white background by default, ready for Post Image spec compliance.
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Reddit post image image size: the 2026 spec
Getting Reddit post image image dimensions right matters for both reach and visual quality. This guide covers the official 1200×628 pixel specification, format requirements, and common pitfalls when preparing images for Reddit post image.
Why 1200×628 pixels
The 1200×628 standard is Reddit post image's recommended upload dimension. Files smaller than this are auto-upscaled and render blurry on high-DPI screens; files larger are downscaled by Reddit post image's CDN. The aspect ratio is 1.91:1.
Specification breakdown
Size: 1200×628 px
Format: JPEG, PNG
Max file size: 500 KB
The "safe area" inside the frame
Crop the central content of your image to the central 70% horizontal, 80% vertical. Reddit post image may crop or overlay UI elements near the edges, so critical content should stay well within the safe zone.
Common mistakes
Above 500 KB — rejected
Aspect ratio off — auto-cropped to a sliver
Frequently asked questions
Why such a small max file size? Reddit enforces aggressive compression to keep the site fast.
How imgsize.cc handles it
Drop your source image into the workbench above. The crop box defaults to the 1.91:1 aspect ratio that matches Reddit post image's spec. Resize, crop, and download as a 1200×628 pixel PNG — all in your browser, no upload required.
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