--- title: "User Uploads: File Limits and Image Optimization" id: "197716" type: "knowledgebase" slug: "upload-limits-and-image-optimization" published_at: "2026-11-04T14:26:20+00:00" modified_at: "2026-11-04T14:26:20+00:00" url: "https://fooplugins.com/documentation/foogallery/user-uploads/upload-limits-and-image-optimization/" markdown_url: "https://fooplugins.com/documentation/foogallery/user-uploads/upload-limits-and-image-optimization.md" excerpt: "Set file counts, sizes and formats, prepare images in the browser, and enable supported MP4 uploads." taxonomy_knowledgebase_cat: - "User Uploads" --- [User Uploads](https://fooplugins.com/documentation/foogallery/user-uploads/) # User Uploads: File Limits and Image Optimization ## Related Articles - [User Uploads: Choose Who Can Upload](https://fooplugins.com/documentation/foogallery/user-uploads/choose-who-can-upload/) - [User Uploads: Configure Email Notifications](https://fooplugins.com/documentation/foogallery/user-uploads/user-upload-email-notifications/) - [User Uploads: Customize the Upload Form](https://fooplugins.com/documentation/foogallery/user-uploads/customize-the-upload-form/) - [User Uploads: Review and Moderate Uploads](https://fooplugins.com/documentation/foogallery/user-uploads/moderate-user-uploads/) - [User Uploads: Share Links, QR Codes and Upload Pages](https://fooplugins.com/documentation/foogallery/user-uploads/share-upload-links-and-qr-codes/) **Need more help?** Browse all documentation or open a support ticket. [All docs](/documentation/) [Support](/support/) Set file counts, sizes and formats, prepare images in the browser, and enable supported MP4 uploads. User Uploads guides - [Getting started](/documentation/foogallery/addons/user-uploads/) - [Who can upload](/documentation/foogallery/user-uploads/choose-who-can-upload/) - [Links, QR codes and upload pages](/documentation/foogallery/user-uploads/share-upload-links-and-qr-codes/) - **File limits and optimization (this guide)** - [Fields, labels and appearance](/documentation/foogallery/user-uploads/customize-the-upload-form/) - [Moderation and approvals](/documentation/foogallery/user-uploads/moderate-user-uploads/) - [Receipts and email notifications](/documentation/foogallery/user-uploads/user-upload-email-notifications/) On this page - [Set count, size and allowed types](#file-limits) - [Prepare images in the visitor’s browser](#image-optimization) - [Allow supported MP4 videos](#video-uploads) - [If a file is rejected or preparation fails](#file-troubleshooting) Edit the gallery and open **User Uploads > Uploads**. These settings apply to that gallery; they do not raise your hosting account or server limits. ## Set count, size and allowed types - **Maximum Uploads Allowed** limits the number of files per submission, not a lifetime total per visitor. Leave it blank for unlimited files per submission. - **Maximum Upload Size** sets the maximum size in MB for each file. Uploads must also fit the site’s WordPress/PHP/server limits. There is no universal WordPress 5 MB limit. - **Allowed File Types** controls the extensions accepted by this gallery. Galleries without a saved custom list include JPG, JPEG, PNG, WebP and AVIF. Existing custom lists keep their saved choices. [/wp-content/uploads/2026/09/user-uploads-uploads-final-1.3.0.png](/wp-content/uploads/2026/09/user-uploads-uploads-final-1.3.0.png) Direct AVIF uploads require WordPress 6.5 or newer and AVIF support in the server image library. Test the formats you intend guests to use on your actual site. ## Prepare images in the visitor’s browser 1. Enable image optimization for this gallery. It is optional and off by default. 2. Set a maximum width and choose **JPEG, PNG or WebP** output. Set quality for JPEG or WebP; PNG is lossless and ignores quality. 3. Include the selected output format in Allowed File Types, then save the gallery. 4. Try a supported image. The upload dialog shows preparation progress before the prepared file is submitted. [/wp-content/uploads/2026/09/image-optimization-settings-detail.png](/wp-content/uploads/2026/09/image-optimization-settings-detail.png) Browser re-encoding removes embedded image metadata and turns animated images into a single frame. Collect captions, alt text and other details through the form when you need them. Optimization does not process MP4 videos. ## Allow supported MP4 videos In **User Uploads > General**, enable **Allow Video Uploads**. It is off by default and currently supports MP4 only. FooGallery video support must also be active; without it, the form remains image-only even if the toggle is enabled. Adjust allowed types, upload size, file count and visitor-facing labels for a mixed-media form. Videos use a generated poster for preview and can follow the same moderation process. Test an MP4 on the intended phones and browsers before inviting video submissions. ## If a file is rejected or preparation fails - Read the displayed validation message. Check the file’s size, extension and type against the gallery settings. - Check that the optimization output format is allowed. Try a small JPEG or PNG to distinguish a format issue from a general upload problem. - If the server refuses uploads below the gallery limit, inspect WordPress/PHP/server limits with your host. - If a browser cannot decode an image, try another supported file. Do not promise conversion of every format supplied by a phone. - For an unavailable video option, confirm FooGallery video support is active. Related: [Getting started and all guides](/documentation/foogallery/addons/user-uploads/) · [Try the upload demos](/foogallery-wordpress-gallery-plugin/user-uploads/#demo) . Resources ## Find the right next step Browse setup guides, get help with your site, or find licensing information. ![Image](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E) ### Documentation Search setup guides, product docs, and troubleshooting articles. [Browse docs](/documentation/) ![Image](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E) ### Support Open a ticket with product details so we can help quickly. [Get support](/support/) ![Image](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E) ### Licensing Review account, renewal, refund, and license information. [View details](/licensing/)