You cut the background off a product photo with a free tool, the preview looked fine on screen, and then the file you could download was small, or the download button turned into a credit prompt. Before you upload the next one, it helps to know what the free tier is defined as on the vendor’s own pages, and how many pixels that is.
What the free download actually is
remove.bg’s pricing page has a FAQ entry titled “What are credits?”. As fetched on 2026-09-30, it says that removing the background from “1 image requires 1 credit”, and that “Preview images are free on remove.bg and ¼ credit via the remove.bg apps”. Source: remove.bg pricing.
The help page says what “preview” means in pixels. Its “Is remove.bg free?” article states that remove.bg is “100% free for low-resolution images (up to 0.25 megapixels) processed on the website and for personal use”. The next paragraph says that for “higher resolutions of up to 50 megapixels and commercial use” there are premium plans and image packages. The same article mentions 50 free previews per month, described as usable with the desktop app or the API, at up to 0.25 megapixels each, and shared with any other API integration. That allowance is separate from the unlimited website previews. Source: remove.bg help, fetched 2026-09-30.
Put together, the mechanism is simple, and it is the part most reviews skip. The tool is free. The file you can use for a full-size post is not. The meter is one credit per full-resolution image, and the free tier is capped at a quarter of a megapixel.
Turning megapixels into pixels you can picture
A megapixel is a million pixels, so 0.25 megapixels is 250,000 pixels. A square image at that count is 500 by 500. Slazzer’s pricing page gives a different shape as its own example: its FAQ answer to “What are preview images?” says they “have a low resolution upto 0.25 megapixels (e.g 625 × 400 pixels)”. Multiply it out and 625 by 400 is exactly 250,000. Source: Slazzer pricing, fetched 2026-09-30.
So the quarter-megapixel figure appears on two separate vendors’ own pages. That is all it establishes. Two vendors using the same number does not make it an industry standard, and this piece does not claim one.
The number is a pixel count, so the long edge depends on the shape. A square gets 500 on each side. A wider image gets a longer long edge and a shorter short edge, as Slazzer’s 625 by 400 shows. A tall 2:3 image at the same pixel count would come to roughly 408 by 612, which is our arithmetic and not a vendor figure. Whether each tool preserves the source’s aspect ratio when it makes a preview is not stated on the pages we fetched, so treat the shapes above as illustration.
Set the preview against the sizes platforms publish
The table sets that pixel count against sizes stated on three help pages, all fetched 2026-09-30. The megapixel column is our own multiplication of width by height, divided by 1,000,000. These are not vendor figures.
| Format | Size the source page states | Megapixels (computed) | Does a 0.25 MP preview cover it? |
|---|---|---|---|
| Free preview (remove.bg, Slazzer) | Up to 0.25 megapixels | 0.25 | Baseline |
| Google Merchant Center product image, minimum | At least 500 x 500 | 0.25 | Only just, and only if the cutout is a full 500 x 500 |
| Google Merchant Center product image, recommended | Around 1500 x 1500 or above | 2.25 | No, nine times the pixels |
| Pinterest standard image ad and Pin | 2:3 ratio, or 1000 x 1500 | 1.5 | No, six times the pixels |
| Pinterest full-bleed Idea ad | 1080 x 1920 | about 2.07 | No, about eight times the pixels |
Two things stand out. First, the ratios: 2,250,000 divided by 250,000 is 9, which is where the nine times in the headline comes from. Second, the free preview only just meets Google’s stated minimum. The Google page says the 500 x 500 requirement applies to all products beginning January 31, 2027, and that for best performance in all listing formats it recommends images around 1500 x 1500 pixels or above. Sources: Google Merchant Center image guidelines and Pinterest product specs.
We left Instagram, TikTok, Etsy and Amazon out. The pages we could fetch did not state usable pixel figures, and a number we did not read is a number we will not print.
When free is enough
The pixel arithmetic supports a few narrow cases. A cutout that will sit as a small element inside a larger composition can be fine at 500 pixels on its long edge, if the element occupies a fraction of the final canvas. A thumbnail is the same idea: if the finished image is displayed at a few hundred pixels across, a 250,000 pixel source is not the limit. And a mockup check before you pay a credit is what the preview tier is for, since it shows whether the edge detection handled hair, glass or shadows before you spend anything.
What free does not do is grow. Enlarging a preview to fit a 1500 x 1500 slot adds pixels but does not restore detail that was never in the file. That is general image behaviour, and we did not find a vendor page to cite for it.
What the other tools’ free tiers say
- Slazzer. The pricing page states 2 free high resolution images for signing up, preview images at up to 0.25 megapixels, and “1 image = 1 credit”. It also has a credits table with rows at 0.20 and 0.50 credit for other features. We report only that those rows exist and do not guess what each one applies to. Fetched 2026-09-30.
- Pixelcut. The pricing page lists the Free plan with “Limited Background Removal” and “Free export without watermark”. Its FAQ says the free version gives “access to basic image editing tools” and that Pro unlocks features including “HD exports for professional-quality results”. It states no pixel size for the free export, so a reader has to test it. Fetched 2026-09-30.
- A two-minute test for any tool. Upload a file whose dimensions you know, for example 3000 x 2000. Download the free result. Open the file properties (or Get Info on a Mac) and read the pixel dimensions. Compare the result with the format you are posting to before you spend a credit.
Pricing and credit lines, dated
Prices and credit rules verified 2026-09-30 from each vendor’s own pricing and help pages. This piece quotes credit rules only and leaves out currency prices, which vary by plan and region.
This piece is not Watchdog data and is not on the re-verification schedule. Vendor pages change, so re-check the pages linked below before relying on any figure here.
Disclosure: followedapp is published by the team behind RecurPost.
Before you spend a credit
Run the file-properties test first. If you are sourcing images for posts, our note on what a stock licence says once a post is boosted covers the next question. For the same metering question for AI voiceover, see our voiceover pricing piece. Video is a different problem, covered in reformatting one video for several feeds. This piece is about still images.
FAQ
Is remove.bg free to use?
Per its help page, fetched 2026-09-30, it is free for low-resolution images up to 0.25 megapixels processed on the website. Its pricing page FAQ says removing the background from 1 image requires 1 credit, so full resolution takes credits.
Can I use a free preview on Pinterest?
Pinterest’s product specs page recommends a 2:3 ratio, or 1000 x 1500 pixels, for standard image Pins and ads. That is 1.5 megapixels by our arithmetic, against 0.25 for the preview, a gap of six times. The pages do not say how a smaller image will look once posted, so we make no claim on that.
Sources
- remove.bg pricing, FAQ “What are credits?”, fetched 2026-09-30
- remove.bg help, “Is remove.bg free?”, fetched 2026-09-30
- Slazzer pricing, fetched 2026-09-30
- Pixelcut pricing, fetched 2026-09-30
- Google Merchant Center image guidelines, fetched 2026-09-30
- Pinterest product specs, fetched 2026-09-30