JPEG Artifacts Remover - Clean Blocking Out of a Compressed Photo
Use this page when the damage came from the encoder: eight-pixel blocks around edges, ringing next to high-contrast lines, smeared colour in flat areas. If the problem is fine grain rather than blocks, the image denoiser fits better, and a file that is simply small belongs on the AI image upscaler.
Upload & Upscale
Drag & drop to upload
Drop your image here
or click to select file
Your first upscale is free — no account needed.
Use it when the artefacts arrived with the compression
JPEG compression splits a picture into blocks and throws away what the eye is least likely to miss. Push it far enough and the decisions become visible: flat squares in smooth areas, a ripple that follows a hard edge, and blocks of colour that no longer line up with the subject. This page is written for that pattern, which appears whenever a file has been exported a few times too many, or when a portal recompressed an upload without asking. The repair pass rebuilds edges and calms the block boundaries while it adds pixels. It cannot bring back detail the encoder discarded, and it cannot undo a file that was resized to a fraction of its original pixels. Read the background notes in our guide to [reducing JPEG artefacts before upscaling](/blog/reduce-jpeg-artifacts-before-upscaling), then run the task here.
Best For
The jobs this page is built to handle well
- A photo that picked up blocks after a few messenger round trips
- An upload that a portal recompressed on receipt
- A screenshot of a JPEG where the blocks now dominate
Choose Another Page When
These jobs usually need a different workflow
- An image that is only pixelated from downscaling, with no block pattern
- Recovering exact text from a heavily compressed document scan
The earliest, least-recompressed copy you still have
Calmer flat areas and cleaner edges at 2x
Straight high-contrast edges and smooth gradients
Go back one copy before you clean the file
If you can find the export from before the last recompression, start there. Cleaning a copy that already carries two generations of blocking costs the same and delivers less.
Why Choose Our JPEG Artifacts Remover
Powerful features designed to give you the best upscaling experience
Aimed at encoder damage: blocking, ringing and colour smear
Common on messenger copies, portal uploads and old exports
One pass cleans and enlarges at 2x, 4x or 8x
Accepts JPEG, PNG, WebP and GIF files up to 10MB
Export as PNG if the file will be edited again
How to Use JPEG Artifacts Remover
Upscale your images in 3 simple steps
Upload the least damaged copy of the file
Prefer a PNG original or the first JPEG export over a version that passed through a chat app, and keep it within 10MB. Each generation adds blocking that later steps cannot read back out.
Run 2x and inspect a high-contrast edge
Blocking shows up next to window frames, railings and dark lettering on light backgrounds. Zoom to 100 percent on one of those edges and compare it with the original before you try a larger step.
Export in a format that will not re-compress
Take the result out as PNG if the file still has to be edited or uploaded somewhere else. Saving it as a fresh JPEG puts a new generation of artefacts back on top of the repair.
Questions Before You Run a Job
These are the practical questions people usually ask before using our JPEG Artifacts Remover workflow.
Closely Related Tools
Use these only when your job fits a neighboring workflow better
Image Denoiser - Clean Grain Before You Deliver the File
Use this page when the complaint is noise: speckle in shadows, colour blotches in a night photo, grain across a sky. If the problem is softness rather than grain, the AI image sharpener is the shorter route; if the frame is blurry instead of noisy, start at the blurry photo fixer.
Depixelate Image - Smooth the Blocks and Rebuild the Edges
Use this page when the pixel grid is visible: blocks from a heavy downsize, stair-stepped diagonal lines, or a logo that was resized to nothing and back. Intentional pixel art is a different job, and it lives on the pixel art upscaler; for grain instead of blocks, start with the image denoiser.
AI Image Upscaler - Recover Detail, Not Just Size
Start in the repair-first lane when a normal resize is not enough and the image needs denoise, deblur, or texture recovery before it looks ready to ship.
Photo Upscaler - Make Photos Larger and Clearer
For portraits, landscapes and photos you want to keep. For close-ups of faces, use our face upscaler. For scanned prints, try the old photo upscaler.
Try the workflow with one image before you scale it up
Upload one image, inspect the result, and decide whether this JPEG Artifacts Remover workflow is the right fit for the rest of the job.