Pick Kompressor if…
You compress only images, not video or PDF.
You want to save $46 by skipping features you won't use.
You want a free tier to test before paying anything.
If you compress video, Compresto makes sense. If you only do images — and most people only do images — Kompressor saves you $46.
Verdict
Compresto is a Swiss Army knife: image, video and PDF compression in one $49 app, with folder monitoring and Raycast support. Kompressor focuses on images only — compress, convert, resize — for $2.99. If you regularly compress H.265 video alongside images, Compresto's hardware acceleration justifies the price gap. If you only compress images (the realistic case for 90% of users), Kompressor delivers the same image quality for one-sixteenth the cost.
| Feature | Kompressor | Compresto |
|---|---|---|
| Price | $2.99 one-time | $49 Personal |
| Free tier | 10 images / day | None |
| Platform | macOS 11+ (Universal) | macOS native |
| Image formats | JPEG, PNG, WebP | JPEG, PNG, WebP, AVIF, HEIC, GIF, TIFF, SVG, BMP |
| Video compression | No | MP4, MOV, H.265 (hardware-accelerated) |
| PDF compression | No | Yes |
| Resize | 5 presets + original | Yes |
| Privacy | 100% local | 100% local |
| Folder monitoring | No (V2 roadmap) | Yes |
| Raycast / URL scheme | No | Yes |
| Apple Shortcuts | No | No |
| JPEG-XL | No (roadmap) | No |
Compresto's image-compression quality is excellent — but so is Kompressor's. For typical JPEG, PNG, and WebP output, both apps produce files within a few percent of each other in size and visual quality. The $46 price gap buys you Compresto's video and PDF compression. If you don't need those, you're paying $46 for surface area you will never touch. If you do — Compresto justifies its price.
Compresto offers no free trial. You pay $49 sight unseen, then decide if you like it. Kompressor offers 10 free images per day with all formats unlocked — no email, no card. You can use it for a real workflow for a week before deciding if $2.99 is worth it. Lower friction, honest test.
Compresto exposes its image / video / PDF surface as panels, sub-panels, and per-format options. That makes sense given the breadth, but for the simple case of "make this image smaller" it is friction. Kompressor stays at a quality slider and a max-size dropdown for images. If you want to compress images quickly without choosing what to ignore in a multi-format tool, Kompressor is faster on the small task.
Kompressor is a 6 MB universal binary (Apple Silicon + Intel) built in Rust. It launches instantly, sips memory, and has no background processes. Compresto is a heavier app because it bundles video codecs and PDF tooling. For a tool you reach for several times a day, the small weight is real.
Compresto's main differentiator is video compression with H.265 hardware acceleration on Apple Silicon. If you regularly need to shrink screen recordings, phone videos, or client deliverables, having one app do both image and video compression is genuinely convenient. Kompressor does not compress video and has no plans to in 2026. For mixed media workflows, Compresto wins.
Compresto compresses PDF files — useful for slide decks, scanned documents, or any PDF too large to email. The algorithm typically halves PDF size without visible quality loss. Kompressor does not handle PDFs.
Compresto outputs nine image formats (JPEG, PNG, WebP, AVIF, HEIC, GIF, TIFF, SVG, BMP). Kompressor outputs three (JPEG, PNG, WebP). For users needing AVIF, GIF or SVG, Compresto covers more ground.
Compresto supports folder monitoring (auto-compress anything new in a watched folder), Raycast plugin, and a URL scheme. For automation-heavy workflows, that is genuinely useful. Kompressor has none of these in 2026.
Compresto Personal is $49 one-time, no subscription, no free tier. Kompressor Pro is $2.99 one-time for one Mac; Kompressor Team is $9.99 one-time for five Macs.
Solo user, image-only: Kompressor saves $46. Solo user, video + image + PDF: Compresto's price is fair given the breadth — there is no $2.99 alternative that does all three. Five-Mac team: Kompressor Team at $9.99 vs roughly $245 for Compresto across five machines (assuming per-Mac licensing). For mixed media at scale, Compresto can still be the right call; for image-only at any scale, Kompressor wins on cost.
You compress only images, not video or PDF.
You want to save $46 by skipping features you won't use.
You want a free tier to test before paying anything.
You regularly compress H.265 video alongside images.
You also compress PDFs — slide decks, scanned documents.
You need folder monitoring or Raycast automation as part of your daily workflow.
10 images every day, no email, no card. See if you really need video compression too.
macOS 11+ · 6 MB universal binary · refundable within 14 days
Yes — that is its main differentiator. Compresto compresses MP4, MOV and H.265 video with hardware acceleration, on top of images and PDFs. Kompressor only handles images.
Yes. Compresto Personal is $49 one-time with no free tier. Kompressor Pro is $2.99 with a 10-image-per-day free tier. The $46 difference is real, and you give up nothing on the image-compression side.
No. Compresto requires payment up front — there is no free tier or trial period. Kompressor offers 10 free images per day with no email or card needed.
Yes. Compresto compresses PDF files, useful for slide decks or scanned documents. Kompressor does not handle PDFs in 2026.
Then Compresto's video and PDF support is wasted surface area. Kompressor does the image side equally well for $2.99 instead of $49 — save the $46.