Filter and Protect Uploads

Route files to different pipelines, enforce upload rules, and protect against malware.

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Documentation

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Uploaded files

DSC_08452_retouched.jpg

Approved

photo_001_copy.jpg

Blocked

IMG_20260209_152347.jpg

Approved

screenshot_2026_143022.png

Approved

IMG_8452_edited_final.webp

Blocked

vacation_beach_DSC.jpg

Approved

profile_pic_final.png

Blocked

Instructions

{
  "steps": {
    ":original": {
      "robot": "/upload/handle"
    },
    "filtered": {
      "use": ":original",
      "robot": "/file/filter",
      "accepts": [
        ["${file.mime}", "regex", "image"]
      ],
      "declines": [
        ["${file.size}", ">", "10485760"]
      ],
      "error_on_decline": true
    }
  }
}

Did you know? You can chain multiple processing steps in a single API call to build your own file processing pipeline.

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

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

Clean

trojan.zip

Blocked

photo.jpg

Clean

report.docx

Clean

malware.zip

Blocked

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/resize

clip.mp4Video/video/encode

doc.pdfDocument/document/convert

banner.pngImage/image/resize

report.docxDocument/document/convert

scan.jpgImage/image/resize

presentation.pptxDocument/document/convert

data.xlsxDocument/document/convert

cover.pngImage/image/resize

receipt.pdfDocument/document/convert

avatar.jpgImage/image/resize

invoice.docxDocument/document/convert

screenshot.pngImage/image/resize

contract.pdfDocument/document/convert

logo.jpgImage/image/resize

summary.pdfDocument/document/convert

thumbnail.pngImage/image/resize

demo.mp4Video/video/encode

budget.xlsxDocument/document/convert

hero.jpgImage/image/resize

manual.docxDocument/document/convert

profile.pngImage/image/resize

archive.pdfDocument/document/convert

wallpaper.jpgImage/image/resize

slides.pptxDocument/document/convert

photo.jpgImage/image/resize

clip.mp4Video/video/encode

doc.pdfDocument/document/convert

banner.pngImage/image/resize

report.docxDocument/document/convert

scan.jpgImage/image/resize

presentation.pptxDocument/document/convert

data.xlsxDocument/document/convert

cover.pngImage/image/resize

receipt.pdfDocument/document/convert

avatar.jpgImage/image/resize

invoice.docxDocument/document/convert

screenshot.pngImage/image/resize

contract.pdfDocument/document/convert

logo.jpgImage/image/resize

summary.pdfDocument/document/convert

thumbnail.pngImage/image/resize

demo.mp4Video/video/encode

budget.xlsxDocument/document/convert

hero.jpgImage/image/resize

manual.docxDocument/document/convert

profile.pngImage/image/resize

archive.pdfDocument/document/convert

wallpaper.jpgImage/image/resize

slides.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 Files

Direct files to different encoding Steps based on size, type, dimensions, or custom conditions.

/file/filter

Scan for Viruses

Reject trojans, viruses, and malware with ClamAV-powered antivirus scanning.

/file/virusscan

Verify File Types

Ensure uploaded files match the expected MIME type regardless of file extension.

/file/verify

Detect NSFW Content

Flag and reject nudity, violence, and other explicit material using AI-powered content moderation.

/image/describe

Plans and Pricing

Simple Pricing

Bigger plans mean lower cost per GB. Need flexibility? Get a custom plan with spending limits. View all pricing options.

Community

$0/mo

Start Free

Perfect for trying out Transloadit

5 GB/mo included

Import & export at 90% discount

Community forum support

All core features included

Transloadit watermark on media

Startup

$69/mo

Get Started

For small teams and startups

40 GB/month included

Import & export at 90% discount

90% cheaper than AWS Lambda

Email & chat support

99.9% uptime SLA

Enterprise

Custom

Contact Sales

For teams with advanced needs

Custom GB allowances

Dedicated account manager

Priority support & SLA

Volume discounts available

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.

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.

Free filtering

Basic file filtering is free of charge — only advanced JavaScript expressions incur costs.

Try Transloadit for free

Try Transloadit

Try Transloadit for free

Start filtering and protecting your file uploads today with our free plan.

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

HIPAA

AES256

SOC 2 Type II Audited

Try Transloadit for Free

No credit card needed · 5 GB included in the free plan · Cancel anytime