Choosing the right design asset format affects how easily you can edit, scale, print, publish, and reuse a file. This guide compares SVG, AI, EPS, PDF, PSD, PNG, and JPG, then provides selection rules, review checkpoints, and an export checklist for logos, illustrations, icons, photos, packaging, and social graphics.
Overview
The central distinction in the raster vs vector discussion is how an image stores visual information. Raster graphics use a grid of pixels. Vector graphics use mathematically defined paths, points, fills, and strokes. That difference affects scalability, editability, file size, transparency, and output quality.
Raster assets are usually the natural choice for photographs, painted textures, scanned artwork, and effects built from pixels. JPG and PNG are common delivery formats, while PSD is often used as an editable working file. Vector assets are better suited to logos, icons, diagrams, lettering, and illustrations made from clean shapes. SVG, AI, EPS, and some PDFs can preserve vector information.
Format names are useful indicators, not guarantees. A PDF may contain vector artwork, raster images, or both. A PSD may contain editable layers, but it may also be a flattened image. An SVG can be highly editable in one application and less convenient in another if it relies on unsupported filters, embedded fonts, or application-specific effects. Before downloading a design asset, check both the file format and the included software version, fonts, linked files, color profile, and license.
For broader purchasing considerations, see Design Asset Licensing Explained. Licensing is separate from file format, but both should be checked before an asset enters a commercial project.
| Format | Best use | Strengths | Watch for |
|---|---|---|---|
| SVG | Web icons, logos, simple illustrations | Scales cleanly; supports transparency; often lightweight | Browser and application support can vary for advanced effects, text, and filters |
| AI | Editable vector artwork in compatible design software | Preserves paths, layers, and vector editing features | May require specific software; linked assets and fonts may be missing |
| EPS | Legacy vector exchange and print workflows | Widely recognized by many graphics and production tools | Can preserve less modern editing information than a native file |
| Proofs, print delivery, mixed vector and raster artwork | Can preserve layout, typography, vector elements, and images | Not every PDF is equally editable or prepared for production | |
| PSD | Layered photo editing, compositing, and mockups | Supports layers, masks, adjustments, and smart-object workflows | Large files, software compatibility, and missing linked assets can affect editing |
| PNG | Transparent web graphics, UI elements, and exports | Lossless raster output; supports transparency | Does not scale indefinitely; can be larger than a comparable web asset |
| JPG | Photographs and compressed web imagery | Compact for photographic content | Lossy compression; does not support transparent backgrounds |
What to track
When evaluating digital art assets, track the requirements that determine whether a file will remain useful after download. A simple project note can prevent the common mistake of choosing a format because it is familiar rather than appropriate.
1. Scalability
Ask whether the artwork must appear at several sizes. A logo used on a website, business card, sign, and package should normally begin as vector artwork. An SVG, AI, EPS, or vector-capable PDF may be appropriate, depending on the editing and delivery workflow. A PNG or JPG export can then be created for a specific screen or placement.
2. Transparency
If the asset must sit over changing backgrounds, confirm that the format can retain transparency. PNG is a practical raster delivery choice for transparent web graphics. SVG can also support transparent backgrounds while retaining vector behavior. JPG is generally unsuitable when a transparent background is required.
3. Editability
Separate “openable” from “editable.” A file may open in an application without retaining separate paths, layers, masks, or text objects. For a layered photo composite or branding mockup, PSD may be preferable. For a logo or icon, a native vector file such as AI may preserve the most useful editing structure when supported by the intended application.
4. Color and output
Screen and print workflows can have different color requirements. Confirm the intended color mode, profile, spot-color needs, and output specification before exporting. For a poster, package, or other physical item, preserve a production-ready working file and create the requested delivery PDF only after checking dimensions, bleed, image resolution, and fonts. The print-ready design templates preflight checklist provides a useful companion process.
5. Compatibility and dependencies
Record the application used to create the asset, the expected software version if supplied, required fonts, linked images, plug-ins, and any embedded or external effects. This matters particularly for AI, PSD, and complex SVG files. If another person will edit the work, test the file in the actual receiving application rather than relying only on its extension.
6. Delivery purpose
Choose the working format and delivery format separately. A high-quality vector or layered source file may be the best master, while the final website may need SVG, PNG, or JPG. A print vendor may request PDF, but that does not mean the PDF should replace the editable source file.
Practical selection rules
- Logo: Download or create a vector master, preferably with editable paths. Export SVG for supported web use and PNG for raster placements.
- Icon: Choose SVG when scalable interface or brand use is required. For a fixed-size interface export, PNG may be sufficient. Check whether the icon pack uses a consistent viewBox, stroke treatment, and naming system.
- Illustration: Use AI, EPS, SVG, or a vector PDF for shape-based artwork. Use PSD or a high-resolution raster file for painterly work, texture-heavy art, or pixel effects.
- Photograph: Keep a high-quality original or editable raster master. Use JPG for many photographic deliveries and PNG when transparency or lossless treatment is more important.
- Packaging: Retain the editable vector or layered source, then supply the printer's requested PDF or production format. Confirm dielines, bleed, color requirements, and linked artwork.
- Social graphic: Build from a layered PSD or a flexible template when revisions are likely. Export a correctly sized PNG or JPG for the specific platform and placement.
For icon systems, compare more than the extension: weight, corner treatment, baseline, grid, and licensing all affect consistency. The complete icon pack guide covers those selection factors in more detail.
Cadence and checkpoints
File-format decisions are not a one-time task because projects change medium, software, and delivery requirements. Use a short checkpoint whenever an asset moves from concept to production, and maintain a recurring review for active libraries.
At download
List every supplied format and identify the master file. Open a sample of the files, inspect layers or paths, and verify that previews match the source. Check fonts, linked images, color information, dimensions, transparency, and license documentation. If the asset is advertised as vector, zoom in and confirm that the important artwork is genuinely path-based rather than a placed raster image.
At the first edit
Test the asset in the application that will be used for production. Try a representative edit: change a color, modify text, scale the artwork, hide a layer, or replace a mockup smart object. This reveals compatibility problems before significant work accumulates.
Before delivery
Export a proof and inspect it at actual size and at a close zoom. Check edges, transparency, missing fonts, image quality, color appearance, crop, and file dimensions. Reopen the exported file or view it in the receiving workflow. Keep the editable master separate from flattened delivery files and use clear filenames that identify version, size, and purpose.
Monthly or quarterly library review
For a frequently used asset library, review it monthly or quarterly according to project volume. Track broken links, duplicate exports, outdated software dependencies, missing licenses, unsupported effects, and formats that repeatedly cause handoff problems. Record which files are masters and which are delivery derivatives. Application support and export recommendations can change, so verify them when a major software update or workflow change occurs rather than treating this guide as a substitute for current application documentation.
How to interpret changes
A change in file size, rendering, or editability is a signal to investigate, not automatically evidence that one format is better. A smaller JPG may be efficient for a photograph but inappropriate for a logo. A larger PSD may be justified when it preserves layers and masks. A PDF that looks correct in a preview may still need production checks if it contains flattened images, substituted fonts, or unexpected color settings.
If an SVG renders differently between applications, inspect its fonts, filters, clipping paths, strokes, and embedded images. If an AI or EPS file loses editability, look for missing links or features that were not preserved during export. If a PNG appears soft, verify its pixel dimensions and the size at which it is being displayed; converting it to SVG will not restore detail that was never vector-based.
When a file fails a requirement, change the workflow rather than forcing the format. Keep a suitable master, then create a purpose-specific derivative. This two-file—or sometimes multi-file—approach is safer than repeatedly editing a compressed JPG or overwriting a layered source with a flattened export.
When to revisit
Revisit this guide whenever a project moves to a new medium, a supplier requests a different delivery format, or a team adopts new design software. It is also worth reviewing an asset library monthly or quarterly when files are reused across branding, ecommerce, publishing, or social channels.
- Write down the next destination: web, print, packaging, presentation, app, or social media.
- Identify whether the asset needs scale, transparency, layers, paths, editable text, or photographic detail.
- Choose the master format first, then choose the delivery export.
- Open and test the downloaded file in the intended application before building the project around it.
- Run a final export check for dimensions, color, transparency, fonts, links, and visible quality.
- Archive the source, license information, and approved exports together with clear version names.
As a quick rule, choose vector for shape-based artwork that must scale, layered raster for complex pixel-based editing, PNG for transparent raster delivery, JPG for many photographic exports, and PDF for an agreed print or document handoff. Recheck the details whenever the destination or software changes. For related asset decisions, see the guides to branding and product mockup templates and digital art assets for branding, social media, and ecommerce projects.
