Graphic Design Fundamentals for Creators and MarketersTools, templates and exporting · Lesson 18 of 18

Exporting for platforms: formats, sizes and quality

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Exporting for platforms: formats, sizes and quality

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Exporting for platforms

  • The last step that ruins good work
  • Format, size, color space
  • Platform specs
  • Presets and an export QA pass

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Chapters

The last step that ruins good designs

You can do everything right and still publish a blurry, color-shifted or cropped image because of a poor export. Platforms compress uploads, and each format behaves differently. A few rules prevent most problems.

Choosing a file format

FormatBest forNotes
PNGGraphics with text, flat color, logos, transparencyLossless; larger files; keeps text crisp
JPG / JPEGPhotographsLossy; small files; artifacts around sharp text at low quality
WebP / AVIFWeb imagesModern, efficient; check platform support
SVGLogos and icons on websitesVector; not accepted by most social uploads
PDFPrint, documents, some carousel uploads (e.g. document posts)Can hold vectors and multiple pages
MP4 (H.264/H.265)Video, animated postsStandard for social video
GIFShort simple animationsLimited colors, large files; MP4 often better

Rule of thumb: text-heavy graphics → PNG (or high-quality JPG if file size limits apply); photos → high-quality JPG; logos for web → SVG; print → PDF.

Size and resolution

  • Export at the platform's recommended pixel dimensions or an exact multiple (for example 1080 × 1350 or 2160 × 2700 for 4:5), keeping the correct aspect ratio.
  • Many design tools offer 1×, 2× or custom scale exports. Exporting at 2× can keep text sharper after platform compression, as long as the file stays within upload limits.
  • DPI/PPI is irrelevant for screens — a 1080 × 1350 image displays the same whether its metadata says 72 or 300 DPI. Pixel dimensions are what count. DPI matters for print, where 300 PPI at final print size is a common guideline.

Color space

Export in sRGB for social media and the web. Images in other color spaces (for example wide-gamut profiles or CMYK) can appear dull or shifted after upload. Print work uses CMYK or the printer's specified profile — ask your printer.

Compression and quality

  • Use high JPG quality (often around 80–90% in most tools' scales) for photos; very low quality creates blocky artifacts.
  • Avoid repeatedly re-saving JPGs — each save loses more quality. Export fresh from the design file.
  • Large, flat areas of gradient can band after compression; subtle noise/grain can reduce banding.
  • Fine text on photo backgrounds suffers most from compression — keep text size generous.

Platform checks

Before publishing:

  1. Verify current specs. Platforms update recommended sizes, grid crops and limits regularly — check official help pages or ad specs.
  2. Preview the crop. Profile grids may crop feed posts differently from the post itself (for example to a squarer or taller shape); keep key content central.
  3. Upload settings. Some apps have settings for uploading at the highest quality; enable them.
  4. Test upload. For important campaigns, upload privately or to a test account and view on a phone.

Export presets

Save export presets for your common outputs:

Preset: Feed 4:5      1080×1350 (or 2160×2700 at 2×)  PNG   sRGB
Preset: Story 9:16    1080×1920                        PNG   sRGB
Preset: YT thumb 16:9 1920×1080 or 3840×2160           JPG/PNG sRGB (check size limit)
Preset: Carousel PDF  1080×1350 pages                  PDF   (for document-style posts)
Preset: Print A5      148×210 mm + 3 mm bleed          PDF   CMYK per printer spec
  • Bleed: extend backgrounds beyond the trim edge (often around 3 mm, check with your printer) so there are no white edges after cutting.
  • Safe margin: keep text a few millimeters inside the trim.
  • Convert or proof colors for print; bright screen colors may look duller in CMYK.

A creator complains their text looks fuzzy after posting. Diagnosis:

  • Exported as a JPG at low quality → switched to PNG.
  • Exported at 540 px wide (0.5×) → exported at 1080 px (or 2×).
  • Small 18 px body text on a photo → increased to 32 px and added a scrim.
  • Uploaded with data-saver settings on → enabled high-quality uploads.

Result: crisp text and faithful color.

Common mistakes

  • Exporting text-heavy graphics as low-quality JPG.
  • Changing DPI and expecting sharper screen images.
  • Exporting in CMYK for Instagram.
  • Relying on outdated size lists from old blog posts.

Export specs per platform (working sizes — verify before launch)

These are common working sizes that match each platform's supported aspect ratios. Platforms change specs, grid crops and file limits often; confirm in each platform's official help center or ads specs before an important campaign.

Platform / placementAspect ratioWorking size (px)FormatNotes
Instagram feed (portrait)4:51080 × 1350PNG (text) / JPG (photo)Profile grid previews at 3:4 — keep key content central
Instagram / Facebook Stories, Reels cover9:161080 × 1920PNG / JPG; MP4 for videoKeep text out of top and bottom UI zones
TikTok video / cover9:161080 × 1920MP4 / JPGRight-side buttons and bottom caption overlay
YouTube video thumbnail16:91920 × 1080 or 3840 × 2160JPG / PNGYouTube's help center lists 3840 × 2160 as recommended, minimum width 640 px; file limits differ for desktop and mobile uploads
YouTube Shorts thumbnail9:161080 × 1920 (help center lists up to 2160 × 3840)JPG / PNGCheck eligibility and current options
LinkedIn feed image1:1 or 4:51080 × 1080 / 1080 × 1350PNG / JPGDocument (PDF) posts for carousels
X (Twitter) image16:91600 × 900PNG / JPGCrop previews vary by device
Pinterest pin2:31000 × 1500PNG / JPGTall pins may be cropped in feeds
Link preview / Open Graph~1.91:11200 × 630PNG / JPGKeep text centered; test with each platform's preview
Website heroVaries2× the displayed widthWebP / AVIF / JPGCompress; provide real text on the page, not only in the image

Hands-on: an export QA pass

EXPORT QA — asset: __________ placement: __________
[ ] Frame size matches the placement's ratio (and ×2 if using 2×)
[ ] Format: PNG for text/flat graphics, JPG for photos, PDF for print/doc posts
[ ] Color: sRGB for screens (print: printer's profile)
[ ] Quality: JPG around 80-90%; no repeated re-saving
[ ] File size within the platform's limit
[ ] Filename: date_campaign_placement_ratio_v#
[ ] Test upload to a private/test account; view on a phone
[ ] Crops: profile grid, link preview, thumbnail size all checked

Summary

Choose format by content, export at correct pixel dimensions (often 2× for text), use sRGB for screens, avoid repeated compression, save presets, and verify current platform specs before important launches.

Key takeaways

  • Choose format by content: PNG for text/flat graphics, JPG for photos, PDF for print and document posts, SVG for web logos, MP4 for video.
  • Pixel dimensions matter for screens (DPI doesn't); export at recommended sizes or exact multiples, often 2× for text.
  • Export in sRGB for screens; CMYK or the printer's profile only for print, with bleed.
  • Keep a platform specs sheet built from official help pages and verify before launches — specs change.
  • Save presets, name files consistently and test-upload to check crops before publishing.

Check your understanding

Quick questions to lock in the lesson. They don’t count towards your certificate.

  1. Which format is usually best for a text-heavy social graphic with flat colors?
  2. A designer changes an image's DPI from 72 to 300 without changing pixel dimensions. How will it look on Instagram?
  3. Colors in an uploaded post look dull compared with the design file. What is a likely cause?

Put it into practice

Create export presets for the three formats you publish most. Re-export one recent post using the right format, size and sRGB, and compare it with the original after uploading to a private test account.

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