# Virus Scanning and Upload Filtering Scan uploads for malware, reject NSFW or copyrighted images, and route files by size, type, or metadata — through one API. [Get Started](/c/signup/) [Get Started](/c/signup/) [Documentation](/docs/robots.md#file-filtering) No credit card needed · Cancel anytime Uploaded files ![DSC\_08452\_retouched.jpg](/artificialintelligence/img/img2.webp?dpl=dpl_DM8JrFduDL1oLK4J3qc9o5gMffMy)DSC\_08452\_retouched.jpg Approved ![photo\_001\_copy.jpg](/artificialintelligence/img/img4.webp?dpl=dpl_DM8JrFduDL1oLK4J3qc9o5gMffMy)photo\_001\_copy.jpg Blocked ![IMG\_20260209\_152347.jpg](/artificialintelligence/img/img5.webp?dpl=dpl_DM8JrFduDL1oLK4J3qc9o5gMffMy)IMG\_20260209\_152347.jpg Approved ![screenshot\_2026\_143022.png](/artificialintelligence/img/img6.webp?dpl=dpl_DM8JrFduDL1oLK4J3qc9o5gMffMy)screenshot\_2026\_143022.png Approved ![IMG\_8452\_edited\_final.webp](/artificialintelligence/img/img8.webp?dpl=dpl_DM8JrFduDL1oLK4J3qc9o5gMffMy)IMG\_8452\_edited\_final.webp Blocked ### Stop bad uploads * **Virus scanning** * **Unsafe content detection** * **Reject files** * **Quarantine suspicious files** * **Filter images, videos, docs, and archives** * **Publish only clean results** Virus scanning Built-in ClamAV antivirus scans reject millions of trojans, viruses, and malware before they reach you. Conditional routing Route files to different encoding steps based on size, type, dimensions, or custom metadata. Flexible conditions Use simple array conditions or JavaScript expressions for complex filtering logic. File Filtering ## Every upload validated before it hits your pipeline Scan for malware, enforce size limits, and route files to the right processing steps — all automatically. ## Flag copyrighted material Detect copyrighted images and route or reject them before they enter your platform. Copyrighted getty\_stock\_48291.jpg © Getty Images97% match ## Enforce size limits Set maximum file size thresholds and automatically reject uploads that exceed your limits with custom error messages. invoice.docx photo.jpg report.pdf clip.mp4 spreadsheet.xlsx presentation.pptx database.sql backup.zip video-raw\.zip 20 MB limit 2 MB 4 MB 8 MB 15 MB 18 MB 28 MB 32 MB 45 MB 55 MB ## Scan for viruses and malware ClamAV-powered scanning rejects trojans, viruses, and malware automatically. Uploaded files document.pdf trojan.zip photo.jpg report.docx malware.zip ## Detect and reject NSFW content AI-powered content moderation flags nudity, violence, and other explicit material automatically. landscape.jpg NSFW upload\_382.jpg ## Route files conditionally Direct files to different processing steps based on their type, size, or metadata. FileTypeRouted to photo.jpgImage/image/resizeclip.mp4Video/video/encodedoc.pdfDocument/document/convertbanner.pngImage/image/resizereport.docxDocument/document/convertscan.jpgImage/image/resizepresentation.pptxDocument/document/convertdata.xlsxDocument/document/convertcover.pngImage/image/resizereceipt.pdfDocument/document/convertavatar.jpgImage/image/resizeinvoice.docxDocument/document/convertscreenshot.pngImage/image/resizecontract.pdfDocument/document/convertlogo.jpgImage/image/resizesummary.pdfDocument/document/convertthumbnail.pngImage/image/resizedemo.mp4Video/video/encodebudget.xlsxDocument/document/converthero.jpgImage/image/resizemanual.docxDocument/document/convertprofile.pngImage/image/resizearchive.pdfDocument/document/convertwallpaper.jpgImage/image/resizeslides.pptxDocument/document/convertphoto.jpgImage/image/resizeclip.mp4Video/video/encodedoc.pdfDocument/document/convertbanner.pngImage/image/resizereport.docxDocument/document/convertscan.jpgImage/image/resizepresentation.pptxDocument/document/convertdata.xlsxDocument/document/convertcover.pngImage/image/resizereceipt.pdfDocument/document/convertavatar.jpgImage/image/resizeinvoice.docxDocument/document/convertscreenshot.pngImage/image/resizecontract.pdfDocument/document/convertlogo.jpgImage/image/resizesummary.pdfDocument/document/convertthumbnail.pngImage/image/resizedemo.mp4Video/video/encodebudget.xlsxDocument/document/converthero.jpgImage/image/resizemanual.docxDocument/document/convertprofile.pngImage/image/resizearchive.pdfDocument/document/convertwallpaper.jpgImage/image/resizeslides.pptxDocument/document/convert Robots ## Robots for File Filtering At Transloadit, a Robot is an automated worker that performs a single task in your file pipeline — like filtering by metadata, scanning for viruses, or verifying file types. [Filter & Route FilesDirect files to different encoding Steps based on size, type, dimensions, or custom conditions./file/filter](/docs/robots/file-filter.md)[Scan for VirusesReject trojans, viruses, and malware with ClamAV-powered antivirus scanning./file/virusscan](/docs/robots/file-virusscan.md)[Verify File TypesEnsure uploaded files match the expected MIME type regardless of file extension./file/verify](/docs/robots/file-verify.md)[Detect NSFW ContentFlag and reject nudity, violence, and other explicit material using AI-powered content moderation./image/describe](/docs/robots/image-describe.md) Transloadit ## Stop letting bad files through Transloadit's file filtering service protects your platform from malware and ensures only valid files reach your processing pipelines. Virus protection ClamAV-powered scanning rejects trojans, viruses, and malware before they ever reach your platform. Metadata filtering Filter by file size, dimensions, duration, bit rate, MIME type, and any metadata field. NSFW detection AI-powered moderation detects nudity, violence, and explicit content so you can reject or route it automatically. Copyright detection Identify copyrighted images before they enter your platform to avoid legal exposure. Conditional routing Direct files to different processing steps based on their properties for optimized workflows. JavaScript expressions Use the full power of JavaScript for complex filtering conditions and dynamic logic. Instant rejection Decline invalid files immediately with custom error messages for better user experience. Flexible filtering Use simple file conditions or advanced JavaScript expressions in the same workflow. [Try Transloadit for free](/c/signup/) [Try Transloadit for free](/c/signup/) Related resources ## Explore this topic Move from the service overview to practical guides, working demos, Robot documentation, and proven customer outcomes. ### Guides * [AI content moderation in an upload workflow→](/guides/ai-content-moderation-workflows.md) * [Automated content moderation: architecture and failure handling→](/guides/automated-content-moderation.md) * [Calibrating AI moderation thresholds, review, and appeals→](/guides/ai-moderation-systems.md) * [Media automation: from upload to reliable output→](/guides/media-automation.md) ### Robot docs * [🤖/file/filter→](/docs/robots/file-filter.md) * [🤖/file/virusscan→](/docs/robots/file-virusscan.md) * [🤖/file/verify→](/docs/robots/file-verify.md) * [🤖/image/describe→](/docs/robots/image-describe.md) ### Solutions * [Healthcare & telemedicine→](/solutions/healthcare.md) * [Social media & user-generated content→](/solutions/social.md) * [Government & public sector→](/solutions/government.md) ### Pricing and customer story * [Pricing→](/pricing.md) * [How Tus may help to save lives→](/casestudies/2017/05/tus-may-help-lives.md) ### Live demos * [View demo→Automatically reject virus-infected files with an error](/demos/file-filtering/reject-viruses-with-an-error.md) * [View demo→Filter out anything other than video or image files](/demos/file-filtering/only-accept-videos-and-images.md) * [View demo→Only resize larger images when resizing files](/demos/file-filtering/only-resize-large-images.md) Try Transloadit ## Try Transloadit for free Start filtering and protecting your file uploads today. Malware reaching your platform Built-in virus scanning Invalid file uploads Metadata-based filtering NSFW content slipping through AI-powered content moderation Copyrighted images on your platform Automatic copyright detection Manual file validation Automatic rejection rules One-size-fits-all processing Conditional routing Poor upload error messages Custom rejection messages Complex validation logic JavaScript expressions GDPR GDPR HIPAA HIPAA ISO 27001ISO27001 ISO 27001 AES-256 AES-256 SOC 2 Type II SOC 2 Type II [Try Transloadit for Free](/c/signup/) [Try Transloadit for Free](/c/signup/) No credit card needed · Cancel anytime