The live upload interface is the final authority on supported file types and size limits, because those rules can change. In general, browser-based image tools work most reliably with standard JPEG or PNG files. A valid file can still fail if it is excessively large, corrupted, stored only in the cloud or encoded in a format the browser cannot pass correctly.
Important: Use only images of consenting adults. Never upload a minor, a person whose age is uncertain, or any individual who has not explicitly agreed to this specific processing.
Common image formats
JPEG is efficient for photographs and usually creates a smaller file. PNG preserves sharp edges and repeated saves without additional lossy compression, but it can be much larger. WebP is common on websites, while HEIC is common on Apple devices, yet neither should be assumed to work unless the upload control lists it. Never disguise a file by changing only its extension; convert it properly.
File size versus image dimensions
File size is measured in megabytes, while dimensions describe pixel width and height. A large number of pixels can provide detail, but an enormous file does not guarantee better output. The service may resize it before processing. Use a clean original within the limit shown in the current interface. Avoid extreme upscaling because it invents detail and increases storage without restoring real information.
Compression and quality
Messaging platforms often reduce resolution and apply strong JPEG compression. Blocky edges, halos and smeared textures make segmentation more difficult. If the authorized original is available, upload that version. If reduction is necessary, resize once, preserve the aspect ratio and use a moderate quality setting instead of repeatedly saving the same JPEG.
Metadata and sensitive information
Photos may contain EXIF metadata such as capture time, device model and location. Remove unnecessary metadata locally before uploading, especially when a file was taken at home or another private place. A metadata-free file is not anonymous if the face, room, documents or filename identify the person. Review the entire frame.
A safe upload checklist
Confirm consent and adulthood, duplicate the approved source into a working folder, remove unnecessary metadata, check the live size limit, open the file to verify it is not corrupted, and use the official upload control. Afterward, follow the agreed retention plan for both the working copy and generated result.
Why transparent and animated files need caution
A PNG can contain transparency that produces an unexpected background during processing. Animated WebP or GIF files may be rejected or reduced to a single frame. Export one ordinary still image and inspect it before upload. Avoid embedded layers or project files unless the service explicitly supports them.
Keep a controlled working copy
Create one clearly named working copy without personal details in the filename. Do not scatter several conversions across desktop, phone and cloud folders. A controlled copy makes it easier to verify which file was authorized and to delete every temporary version afterward.
Practical conclusion
Treat every output as synthetic, protect the source file, and verify the service's current rules before uploading or paying. Technical convenience never replaces consent, adulthood verification, privacy review or honest labeling of generated content.
For current features, pricing and the complete verdict, read the full UndressHer AI review.
Frequently asked questions
Is JPEG or PNG better?
JPEG is usually practical for photographs; PNG can preserve edges but may be larger. Follow the current upload requirements.
Can I rename HEIC to JPG?
No. Renaming does not convert the image data. Use a trusted local converter.
Does a larger file always improve the result?
No. Source clarity matters, and the platform may resize very large files.
