Photopea’s own site is clear: files run on your CPU and GPU; it is not a send-the-file-to-edit clone of a cloud compressor. That makes Photopea a fair peer to HideShot on privacy of transit. The difference is product shape. Photopea is a full raster editor. Pixelate is Filter → Pixelate → Mosaic after you build a selection.
HideShot puts Pixelate, Blur, and Black Box on the toolbar. If you already think in layers and feathered selections, Photopea may still be home. If you wanted mosaic on a face or a plate in thirty seconds, use the tool on this page.
Guide
Most “alternative to X” pages pretend the competitor is a cloud villain. Photopea is not that. Ivan Kutskir’s editor is a browser Photoshop relative: layers, smart objects-style workflows, Filter → Pixelate → Mosaic with an adjustable cell size, and a public claim that files never leave the device. If your threat model is “I will not send this JPEG to a random converter,” Photopea already satisfies it. HideShot has to earn the click on a different axis: speed, a redaction-first toolbar, and less editor chrome.
This page is for people who searched “Photopea pixelate alternative” because Mosaic is buried in a Filter menu, because ads in the free editor get in the way of a one-off job, or because they want Black Box sitting next to pixelate without learning layer masks.
Photopea’s real strengths
Local processing. Photopea’s homepage states there are no uploads and that it uses your CPU and GPU. That is the same privacy category as HideShot, and it should be said plainly.
Control. Marquee, lasso, pen, magic wand, feathered edges, different mosaic sizes per region, non-destructive layer stacks. If you are pixelating six faces at different scales in a press photo, Photopea can be more precise.
Formats. PSD, many RAW types, SVG, PDF pages as images, TIFF, and more. HideShot is not a format Swiss Army knife.
The rest of Photoshop-like editing. Curves, liquify-class tools, text layers. Pixelate is one filter among hundreds.
Where Photopea is the wrong tool for the job
A full editor is slow when the job is “cover the plate and download.” You select, you find Filter → Pixelate → Mosaic, you pick cell size, you confirm, you export, you hope you flattened correctly. None of that is difficult if you live in Photopea. It is friction if you do this twice a year.
Photopea’s free UI includes advertising. That is a fair trade for a powerful free editor. It is still clutter when you are redacting a stressful document photo.
Photopea will not lecture you that mosaic is weaker than an opaque fill for PAN digits. HideShot will. That editorial stance is part of the product.
What HideShot offers instead
Pixelate is a toolbar button. So are Blur and Black Box. Rectangle, oval, and lasso sit beside them. Paste from clipboard works for screenshots. Export is PNG. There is no layer panel because there are no layers — the pixels you cover are covered in the download. That is worse for a designer who wanted to undo mosaic next week inside a PSD. It is better for a person who wanted the covered version to be the only version they send.
HideShot still runs entirely in the browser on your device. You can use it as a lighter local tool even if Photopea is installed in your muscle memory for everything else.
Keyboard habits transfer only a little. Photopea’s shortcuts mimic Photoshop; HideShot has almost none beyond paste. That is not a knock on Photopea — it is why designers stay. It is also why a parent covering a house number before a marketplace listing should not have to remember which toolbar is Mosaic this month. If you already keep Photopea pinned because you retouch client work, keep it. Open HideShot in a second tab for the files that should never become a layered project.
One more practical split: screenshots. Photopea will open a PNG from Discord or a phone, but you will still build a selection and hunt a filter. HideShot is built for clipboard paste from Snipping Tool, ShareX, or iOS screenshots. The mosaic still lands on the pixels; you just skip the editor ritual. If the screenshot contains a mix of a face and a password, use Pixelate on the face if you want the “censored photo” look and Black Box on the password. Photopea can do both with two layers. HideShot does both with two toolbar clicks.
Decision guide
Choose Photopea if you need mosaic cell-size control, feathered selections, PSD round-trip, or you are already editing the same file for color and crop. Choose Photopea if local-in-browser plus full editor is the requirement and you accept the learning curve.
Choose HideShot if pixelate/blur/black-box is the entire session, if you want a safety-oriented default for text, or if you want a screenshot paste → cover → PNG loop with no Filter menu. Dedicated pages for pixelating an image and pixelating a face use this same local canvas. If you are pixelating for an 8-bit art look rather than privacy, Photopea’s Mosaic cell size is the better toy — HideShot’s pixelate is a concealment preset, not a design filter with a 2–200px slider.
How to pixelate in HideShot
- Drop or paste the image into the tool above.
- Click Pixelate. For IDs and numbers, switch to Black Box instead — mosaic is a look; black is a cover.
- Draw the region. Repeat for each face, plate, or text strip. Undo if the box clipped an eyebrow you meant to keep.
- Download PNG and check at 100%. If you can still read a digit, the cell size in a mosaic tool would have been too small anyway — enlarge the cover.
Bottom line
Photopea is the more powerful local editor, and it keeps the file on your device. HideShot is the more specialized local redactor. “Alternative” here means a simpler tool for the same on-device constraint, not a claim that Photopea mishandles files. Pick the UI that matches how often you actually need Mosaic versus how often you need to hide something and leave.