EPS vs AVIF — Should You Convert, or Keep the Vector?
These two formats sit at opposite ends of the graphics world. EPS is Encapsulated PostScript, a 1987 page-description format built for print, where artwork is stored as scalable instructions rather than pixels. AVIF is the AV1 Image File Format, published by the Alliance for Open Media, which packs AV1-compressed pixels into a HEIF container for the web. The short answer: convert to AVIF when the artwork is going onto a web page and you know the size it needs to be, and stay on EPS — or move to SVG — when it still has to scale, be edited, or go to a printer.
Side-by-side Comparison
| Property | EPS | AVIF |
|---|---|---|
| Kind | Vector page description | Raster image |
| Published by | Adobe's John Warnock and Chuck Geschke with Aldus, 1987 | Alliance for Open Media; specification v1.2.0 finalised 16 October 2025 |
| Built on | The PostScript language, conforming to the Document Structuring Conventions | The AV1 bitstream inside a HEIF / ISOBMFF container |
| Resolution behaviour | Independent — enlarges without any loss of edge quality | Fixed pixel grid, chosen at conversion time |
| Size declaration | The %%BoundingBox comment, in PostScript points of 1/72 inch |
Explicit pixel width and height |
| Colour | Grayscale, RGB, CMYK, and spot separations for prepress | 8, 10, and 12-bit, plus SDR, HDR, wide gamut, and monochrome |
| Transparency | No alpha channel — PostScript paints opaquely, and unpainted areas are simply never drawn | Yes, via auxiliary alpha image items |
| Compression | None applied to the vector instructions | Lossy or lossless AV1 intra coding |
| Native browser support | None — no browser renders PostScript | 94.67% — Chrome 85+, Firefox 93+, Safari 16.4+, Edge 121+ |
| Still editable afterwards | Yes, in any vector editor | No — pixels only |
When to Stay on EPS
- The artwork is going to a printer, a prepress house, or anything that needs CMYK or spot-colour separations.
- It will be scaled to unknown sizes later — a logo destined for both a business card and a trade-show banner should not be flattened yet.
- Someone still needs to edit the paths, type, or colours.
- You want a vector on the web rather than a raster: EPS to SVG keeps the artwork scalable and gives you something browsers actually render.
When to Convert to AVIF
- The image is destined for a web page at a size you already know, and page weight matters.
- The artwork has soft gradients, blends, or subtle shading — the kind of content AVIF's AV1 coder handles far better than a palette-based format.
- You need transparency on the web without PNG's file size.
- You are shipping to a modern audience and can serve a fallback for the small remainder — AVIF is well supported but not yet universal.
How to Convert EPS to AVIF
- Upload Your EPS File: Drag it onto the page or click "+ Add Files". Several
.epsfiles can be queued and each becomes its own AVIF. - Set the Quality Preset: "Image Compression" opens on "Quality Preset" at "Very High (Recommended)", with Highest through Lowest available. AVIF output here is quality-driven lossy AV1 coding, so this is the main size lever.
- Set the Output Size: "Image resolution" opens on "Keep original", which uses the artwork's rasterised dimensions. "Preset Resolutions" runs from 16P to 4320p, and Width / Height / Width x Height accept either pixels or a percentage. Switch the compression mode to "Specific file size" instead if you need to hit a byte budget — the box is prefilled at 8 MB.
- Convert and Download: Click Convert and save the AVIF. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours. No sign-up, no watermark.
AVIF Against the Other Web Targets
| Property | AVIF | WebP | PNG | JPG |
|---|---|---|---|---|
| Coding | AV1 intra-frame | VP8 intra-frame (lossy) or RGBA (lossless) | Lossless DEFLATE | JPEG DCT |
| Container | HEIF / ISOBMFF | RIFF | PNG chunks | JFIF |
| Alpha channel | Yes | Yes | Yes | No |
| Bit depth | 8, 10, or 12-bit | 8-bit | 8 or 16-bit per channel | 8-bit |
| Global browser support | 94.67% | 96.18% | Universal | Universal |
| Compression standing | Generally the strongest of the four | About 30% smaller than JPEG at matched quality; lossless mode about 26% smaller than PNG | Lossless baseline | Lossy baseline |
| Reach for it when | Page weight is the priority | You want most of the benefit with slightly wider support | The image must be pixel-exact | Anything, however old, has to open it |
If AVIF's support gap is a problem, EPS to WebP is the pragmatic middle ground, and EPS to PNG is the safe universal fallback.
Frequently Asked Questions
Why convert a scalable vector to a fixed-size raster at all?
Because browsers cannot render PostScript. An EPS is unusable on a web page — there is no <img> that will display it and no CSS that will style it. Rasterising to AVIF is what makes the artwork viewable, and AVIF is the smallest widely-supported way to do it. The vector original does not go anywhere; keep it as the master and treat the AVIF as an export.
Does AVIF keep the transparency from my EPS?
Yes. AVIF carries transparency through dedicated auxiliary alpha image items, and it is preserved by default rather than flattened. In our testing, a transparent EPS converted to AVIF came back with its alpha channel intact — the output reported an RGBA colour model rather than a solid background where the artwork was unpainted. Bear in mind that EPS itself has no alpha channel; transparent output simply reflects the areas the PostScript never painted.
What pixel size will the AVIF be if I leave the resolution alone?
Whatever the EPS %%BoundingBox declares, read at one PostScript point per pixel. A bounding box of 0 0 400 250 becomes a 400 x 250 pixel AVIF. Because the raster is produced from the bounding box before any resizing, enlarging the result with "Image resolution" scales those pixels up rather than re-drawing the vector at a higher density. If you need a large, sharp AVIF, export the EPS with a correspondingly large artboard from Illustrator or Inkscape first.
How does AVIF actually compare with WebP for this kind of artwork?
AVIF generally compresses better than WebP, JPEG, PNG, and GIF, and the advantage is widest on exactly what vector art produces — smooth gradients, flat fills, and clean edges. WebP's counter-argument is reach: 96.18% global support against AVIF's 94.67%, plus far better support in desktop image viewers and older editing tools. If the file is going straight onto a web page behind a <picture> element, take AVIF. If it also has to open by double-click on someone's laptop, WebP is less trouble.
Which browsers and apps open AVIF?
AVIF reaches 94.67% of global browser traffic: Chrome 85 and later, Firefox 93 and later, Safari 16.4 and later, and Edge 121 and later. Support outside the browser is thinner — some older desktop viewers and editing suites still cannot open it, and a few mobile browsers such as Opera Mini have no support at all. Serve a WebP or JPEG fallback if the audience is unknown.
Why is there no "Lossless?" toggle on this page?
Because that control belongs to WebP targets, where lossless is a genuinely different coder. AVIF output here runs the quality-driven AV1 path, so the "Quality Preset" dropdown is what governs fidelity — push it to "Highest" if you want the artefacts to be effectively invisible on flat vector fills. For truly bit-exact output, use a lossless format instead, such as EPS to PNG.
Can I hit a specific file size instead of picking a quality preset?
Yes. Switch the compression mode from "Quality Preset" to "Specific file size" and enter a target — the field is prefilled at 8 MB, and Bytes, Kilobytes, and Megabytes are all selectable. The encoder then works backwards to a quality that lands near your budget. For a small piece of vector artwork this is rarely necessary; a logo at "Very High" will typically already be a few kilobytes.
Can I turn the AVIF back into EPS or another vector format later?
Not meaningfully. Rasterisation discards the paths, and going the other way means tracing the pixels — an approximation that will not reproduce your original curves, text, or spot colours. Always keep the EPS as the master. If what you actually need is a scalable web format rather than a raster one, convert the source directly with EPS to SVG instead of round-tripping through AVIF.