Adobe Stock is one of the most rewarding microstock agencies for contributors, thanks to its deep integration with the Creative Cloud ecosystem and a buyer base of designers, marketers, and agencies who actively license premium content. However, getting accepted into the collection requires strict adherence to technical, legal, and metadata standards.
This guide walks you through everything you need to know to prepare, upload, and index your content efficiently on Adobe Stock – from file specs to CSV batch metadata.
1. File Requirements by Content Type
Adobe Stock accepts a wide variety of asset types, each with specific technical thresholds. Submitting files that don’t meet these minimums is the most common reason for rejection.
Photos and Illustrations (JPEG)
Raster images are the backbone of the Adobe Stock collection. To be accepted, they must meet the following specs:
- File format: JPEG only
- Color space: sRGB
- Minimum resolution: 4 megapixels (e.g., 1,600×2,400 pixels)
- Maximum resolution: 100 megapixels
- Maximum file size: 45 MB
If your archive contains older or smaller files that don’t reach the 4 MP threshold, you can use the AI Upscaler available on Photokeyworder.ai to enlarge them losslessly before submission.
Transparent PNG Files
Adobe Stock supports PNGs with transparency as standalone “utility assets” -isolated objects, overlays, frames, and graphic elements designed to be layered into larger compositions.
- Format: PNG only, with transparent background (no checkered or solid fake-transparency backgrounds)
- Color space: sRGB
- Minimum resolution: 4 MP
- Maximum resolution: 100 MP
- Maximum file size: 45 MB
A key rule: do not upload identical files as both PNG and JPEG. Adobe Stock considers this a duplicate submission.
Vector Files
Vectors are among the most adaptable assets in the Adobe Stock collection, used for icons, illustrations, packaging, and motion graphics.
- Accepted formats: AI (Adobe Illustrator), EPS (Encapsulated PostScript), SVG (Scalable Vector Graphics)
- Not accepted: vectors inside ZIP folders or uploaded as JPEGs
- Maximum file size: 45 MB
- Artboard size: between 15 MP and 65 MP for optimal performance
- Artboard offset: (0,0) upper-left corner
- Document color mode: RGB
When a customer downloads a vector with a transparent or flat background, Adobe automatically generates a transparent PNG version – you don’t need to upload one separately.
Design tips: outline all fonts, organize layers logically, unlock all layers before exporting, and avoid effects that may not render correctly in third-party software (Inkscape, CorelDraw, Affinity Designer, Figma).
Videos
Adobe Stock accepts footage shot with any camera – including mobile devices – as long as it meets the technical bar and the quality is good enough.
- Accepted container formats: MOV, MP4, MPG
- Recommended codecs: ProRes, H.264 (also accepted: MPEG-2, MPEG-4, MJPEG, PNG)
- Duration: minimum 5 seconds, maximum 60 seconds (15 seconds recommended for horizontal, 10–30 for vertical)
- Maximum file size: 3.9 GB
- Frame rates: keep the native rate (23.98, 24, 25, 29.97, 30, 50, 59.94, or 60 fps)
- Audio: 48 kHz, 16-bit uncompressed (or no audio at all)
Accepted resolutions:
- Horizontal: 1920×1080, 2048×1080, 3840×2160, 4096×2160, 4096×2304
- Vertical: 1080×1920, 2160×3840, 2160×4096, 2304×4096
- Square: 1080×1080, 2160×2160
They suggest to never up-res footage (e.g., from HD to 4K) – submit at native resolution or smaller.
2. Metadata: Titles and Keywords
Metadata is what makes your content discoverable. Adobe Stock uses the Adobe Sensei AI engine to weight relevance, but the rules you follow at submission directly impact your search ranking.
Titles
- They suggest to keep titles 70 characters or fewer, but we’ve noticed that even media with longer titles (>70, up to 200 characters) can be very relevant in their search results. We didn’t test for titles longer than 200 characters, since it’s the enforced limit for our service
- Use natural, descriptive phrases – not keyword lists
- Be factual and precise: include the subject, action, and setting
- No commas (especially for CSV uploads), in theory. In practice, it doesn’t seem to make a difference, at least when applying CSV files generated with Photokeyworder.ai
- No brand names, trademarks, camera specs, artist names, real people, or fictional characters
Example of an effective title:
“Senior woman flexing her muscles on beach”
Keywords
- Minimum: 5 keywords
- Maximum: 49 keywords
- The first 10 keywords are the most important – Adobe Sensei weights them heavily in search ranking
- Order keywords by relevance, from most to least important
- Use single concepts per keyword (e.g., “white”, “fluffy”, “puppy” – not “white fluffy puppy”)
- Include conceptual keywords (mood, feelings, trends), demographic information (when verified with the model), location, viewpoint, number of people, and setting
Photokeyworder.ai automatically generates and ranks keywords by relevance, aligning natively with Adobe’s prioritization algorithm.
What to Avoid in Metadata
Adobe Stock has a strict content policy. Titles, keywords, and even generative AI prompts must never contain:
- Artist names (including single-name artists like Banksy or Yayoi Kusama)
- Real known people (politicians, athletes, celebrities, influencers)
- Fictional characters (Spiderman, Pikachu, Gandalf)
- Creative works still in copyright (movies, franchises, comics)
- References like “in the style of…”, “inspired by…”, “influenced by…”
- Brand names, trademarks, company names
- Camera specifications (Nikon, 4K, 12MP)
- Content type words (vector, illustration, video)
Violating this policy can lead to content removal or permanent account closure.
3. Generative AI Content
Adobe Stock accepts content created with generative AI tools across all major asset types: Photos, Illustrations, Vectors, and Videos.
Submission Rules
- Always check the “Created using generative AI tools” box at upload
- Check the “People and Property are fictional” box if the AI-generated content shows people or property that don’t exist in real life
- If the AI content depicts a real, identifiable person (e.g., used as a prompt reference), a model release is required
- Choose Photos as the asset type if the output is photorealistic with correct anatomy; choose Illustrations for artistic or fantasy outputs
- AI videos must meet a minimum resolution of 1080 pixels on both sides
Prompt Restrictions
Generative AI prompts cannot reference:
- Artist names whose work is still under copyright
- Real people, government agencies, or third-party IP
- Newsworthy events (your content cannot imply real news coverage)
Don’t add “generative AI” to titles or keywords – the dedicated checkbox already classifies your asset.
4. Model and Property Releases
A release is a legal agreement that authorizes commercial use of someone’s likeness or property.
When You Need a Model Release
If a person in your image is recognizable – by face, tattoos, birthmarks, distinctive clothing, or context – you need a signed model release. This applies to:
- Photos with visible faces (even on printed t-shirts or wall portraits)
- Vector illustrations based on real people
- Videos with identifiable speakers (their voice counts too)
- Self-portraits (you sign as both photographer and model)
- Nudity (even if not recognizable – add a copy of photo ID for age verification)
When You Need a Property Release
Required for:
- Famous landmarks, historic locations, modern architecture
- Private homes and identifiable interiors
- Distinctive product shapes (luxury furniture, vehicles, toys)
- Unique animals (race horses, famous pets)
- Copyrighted works (art, books, maps, fictional characters)
- Locations with photography policies (museums, stadiums, concert venues)
Releases can be uploaded as scanned JPEGs or generated electronically via Adobe Acrobat Sign directly in the Contributor portal.
5. CSV Metadata for Batch Uploads
For contributors managing large batches – especially videos, where metadata cannot be embedded as easily as in JPEG/EPS files – Adobe Stock supports CSV files for indexing.
CSV Technical Specs
- Format: CSV UTF-8 (critical for contributors outside the US to avoid character encoding issues)
- Maximum rows: 5,000 per file
- Maximum file size: 1 MB
- CSV filename: no spaces (e.g.,
JohnDoe_7_17_17.csv) - Headers: must match Adobe’s template exactly, in English (do not translate)
Required Columns
- Filename – exact name of the uploaded asset, including extension. Filenames should be 30 characters or fewer, at least in theory. In practice, we’ve tried with filenames longer than 100 characters and it doesn’t seem to make any difference.
- Title – 70 characters suggested, no commas, at least in theory. In practice, even titles up to 200 characters with commas are technically fine, at least when the CSV or the embedded metadata are generated with our tool Photokeyworder.ai
- Keywords – up to 49, ordered by relevance, separated by commas. The first 10 keywords are the most relevant.
Recommended Columns
- Category – a number from 1 to 21 corresponding to Adobe’s official categories (Animals, Business, Food, Landscape, People, Technology, Travel, etc.). Our tool Photokeyworder.ai automatically chooses the most relevant category and writes it in the CSV file for Adobe.
- Releases – exact filename of the JPEG release uploaded to the portal (in theory, it should be 30 characters or fewer, in practice it shouldn’t make a difference)
Special Characters and Filenames
Adobe Stock doesn’t publish an explicit blacklist of special characters, but the following implicit rules apply:
- No spaces in the CSV filename
- No commas in titles. In theory they would break column structure, in practice we didn’t experience this problem if the CSV is formatted using our service
- UTF-8 encoding is mandatory to correctly handle accents, local language characters, or any non-ASCII symbol
- Asset filenames should stay simple and within 30 characters, in theory. In practice, there seems to be no problem with longer filenames
- We did some tests with special and accented characters, and the files seem to be processed correctly. Even mixing up NFD accents (typical of Mac computers) in the filenames with NFC filenames in the CSV doesn’t seem to cause issues.
6. Upload Methods
Adobe Stock provides several ways to submit content, with no overall data limits:
- Contributor Portal (Web): drag and drop or browse – suitable for most workflows
- SFTP: recommended for video and high-volume uploads. Use any SFTP client (FileZilla works well). Host:
sftp://sftp.contributor.adobestock.com. Leave the port empty or set it to 22. Passwords must be generated from the portal - Adobe Lightroom Classic: drag photos directly into the Publish panel (raw files are converted automatically to JPEG, 300 ppi, sRGB)
- Adobe Bridge: upload through the Publish panel
If your network drops mid-upload, you can resume from where you left off – already-uploaded files appear in the portal.
7. Categories
When you upload files, Adobe Sensei suggests a category, but you can override it. The 21 official categories are:
- Animals
- Buildings and Architecture
- Business
- Drinks
- The Environment
- States of Mind
- Food
- Graphic Resources
- Hobbies and Leisure
- Industry
- Landscape
- Lifestyle
- People
- Plants and Flowers
- Culture and Religion
- Science
- Social Issues
- Sports
- Technology
- Transport
- Travel
Pick the closest match if no category is a perfect fit. If you use Photokeyworder.ai, we choose the best category automatically and write it in the CSV
8. Common Rejection Reasons and Best Practices
Quality Issues
- Noise, dust, or visible artifacts
- Soft focus or over-sharpening
- Heavy compression and pixelation
- Drastic contrast adjustments that lose detail
- Aggressive shadow lifting that introduces noise
Editing Don’ts
- No black and white or duotone conversions (buyers want full color flexibility)
- No vignettes, sun flares, kaleidoscope effects, or filters
- No mirrored, flipped, or rotated duplicates
- No watermarks, signatures, or text added to images
- No upscaling (except via legitimate AI tools that maintain detail integrity)
Spam Prevention
Adobe Stock’s moderation team treats the following as spam, which can lead to account suspension or termination:
- Multiple near-identical submissions
- Different crops or rotations of the same image
- Multiple AI outputs from the same prompt
- Long, repetitive, or irrelevant keyword lists
Conclusion
Adobe Stock rewards contributors who treat metadata, technical quality, and legal compliance as a unified workflow. By respecting the 4 MP minimum for raster, the 15 MP artboard minimum for vectors, the relevant title, the 49-keyword cap, and the strict policy on copyrighted references, you maximize approval rates and long-term earnings.
Tools that automate keyword generation and ranking – like Photokeyworder.ai – align directly with Adobe Sensei’s first-10-keywords prioritization, and pick the best category for your asset, helping you save hours per batch while improving search visibility.
Prepare clean, well-documented submissions, batch-index them with CSV when scaling, and your portfolio will steadily climb in the marketplace.
