Design Export Formats Explained: When to Use PNG, JPG, WebP, PDF & PXS

Why Choosing the Right Export Format Matters

You can spend hours perfecting typography, adjusting gradients, and balancing visual hierarchy, but selecting the wrong export format can ruin your final output. Exporting a logo as an aggressive lossy JPG introduces muddy compression artifacts around crisp text. Conversely, exporting a photo-heavy presentation as an uncompressed 24-bit PNG can create an unwieldy 100MB file that bounces in email inboxes.

Understanding the mathematical and functional differences between graphic file formats empowers you to make informed decisions for web performance, social media reach, and commercial print accuracy. Here is the definitive guide to graphic export formats supported in Pixus.

Comprehensive Graphic Format Comparison Matrix

Format	Compression Type	Transparency	Vector Support	Primary Use Case
PNG	Lossless (Deflate/LZ77)	Full 8-bit Alpha	No (Raster)	Logos, social graphics, icons, UI overlays
JPG / JPEG	Lossy (DCT)	No Transparency	No (Raster)	Photographs, digital art, email newsletters
WebP	Lossy & Lossless	Full Alpha Support	No (Raster)	Modern website development, fast-loading blogs
PDF	Lossless Vector & Raster	Full Vector Transparency	Yes (Native)	Print documents, resumes, multi-page slide decks
.PXS	Lossless JSON Archive	Layer-Dependent	Yes (Node Tree)	Non-destructive project backups & transfers

Deep Dive into Each Format

1. PNG (Portable Network Graphics)

PNG is an open, lossless raster image format developed to replace GIF. Because it uses Deflate compression (similar to ZIP), it preserves every single pixel with mathematical precision. Colors remain 100% true, lines stay razor sharp, and transparency channels (alpha transparency) blend smoothly over any backdrop.

When to choose PNG:

• Logos, badges, and brand icons that require transparent backgrounds.
• Graphics containing small typography, charts, or geometric screenshots.
• Social media graphics for Instagram, Twitter, and LinkedIn where lossy compression produces visible halo artifacts.

Resolution Scaling in Pixus: Pixus allows exporting PNGs at 1×, 2×, and 3× scale. A 1080×1080 canvas exported at 2× yields a 2160×2160 image—perfect for crisp presentation on Apple Retina and 4K displays.

2. JPG / JPEG (Joint Photographic Experts Group)

JPG utilizes Discrete Cosine Transform (DCT) lossy compression, which discards subtle color data that human eyes struggle to detect in natural scenes. This achieves dramatic file size reductions (often 80-90% smaller than PNGs of the same resolution).

When to choose JPG:

• Full-bleed photographs, real estate listings, and portrait photos.
• Email marketing graphics where keeping email weight below 100KB is critical.
• Website hero banners with rich background scenery where loading speed impacts SEO.

3. WebP

Developed by Google, WebP provides superior lossless and lossy compression for images on the web. WebP images are typically 26% smaller than PNGs and 25-34% smaller than comparable JPEGs at equivalent visual quality scores. Modern browsers (Chrome, Safari, Firefox, Edge) offer universal WebP support.

When to choose WebP:

• Publishing graphics to your blog, portfolio, or e-commerce storefront.
• Any digital application where Core Web Vitals and PageSpeed scores matter.

4. PDF (Portable Document Format)

PDF is not merely an image format; it is a complete page description language. In Pixus, exporting to PDF packages vector text, raster photographs, shapes, and multiple pages into a standardized document. Text remains scalable vector curves, meaning printers can reproduce it at 2400 DPI plate resolutions without pixelation.

When to choose PDF:

• Commercial printing (business cards, flyers, brochures, posters).
• Multi-page presentations, sales proposals, and invoices.
• Job applications and ATS-compliant resumes (see our resume guide).

5. .PXS (Pixus Open Project Archive)

A .pxs file is an open, portable JSON archive containing your full non-destructive project data: layer coordinates, typography parameters, color stops, element groups, and base64-encoded image assets.

When to choose .pxs:

• Saving an editable backup of your work to your local hard drive or cloud backup.
• Transferring an active design to a collaborator without sharing logins or accounts.
• Archiving client templates for future seasonal updates.

Quick Decision Checklist

1. Does it need a transparent background? → Choose PNG (or WebP).
2. Is it a continuous-tone photograph for web display? → Choose JPG or WebP.
3. Is it a multi-page presentation, resume, or print asset? → Choose PDF.
4. Do you need to resume editing all layers next month on another computer? → Choose .PXS.