Uplint
Try uplint — find what your validation misses

The missing trust layer for incoming data

Every cloud has storage, compute, and queues — but nothing that understands what's inside incoming files. Uplint is the trust layer that sits between the outside world and your infrastructure — verifying, understanding, and securing every file before it enters your system.

Not a CDN. Not storage. The trust layer.
One API call. Understand, verify, trust.
The missing layer in your stack

S3 stores bytes. It has no idea what's inside them.

You have firewalls for your network and WAFs for your endpoints — but zero trust for the data itself. Files land in your storage unchecked, unverified, and misunderstood. Here's what slips through every day.

What your app checks
Check file extension
Enforce size limit
Store to S3
Looks good. Ship it.
What still gets through
Blank PDFs with zero readable contentblank
Spreadsheets with headers but no actual datablank
Single-pixel or solid-color imagesblank
Executables renamed to .pdf or .jpgmalicious
Corrupt files that pass extension checkscorrupt
Text files filled with only whitespaceblank

Uplint is the trust boundary for incoming data — every file is understood, verified, and secured before it touches your infrastructure.

Content intelligence, built in

Understand, verify, and trust every file

Uplint doesn't store your files — it understands them. Deep content analysis, structural validation, threat detection, and audit logging as a single managed layer. The infrastructure primitive your upload pipeline is missing.

Intelligent Blank Detection

Catch the files nobody else catches. Uplint reads into the actual content — detecting PDFs with zero readable words, spreadsheets with headers but no data, single-color images, and text files filled with whitespace.

Empty PDFsHeader-only sheetsSolid-color imagesWhitespace text
invoice_q4.pdf
0 readable words
user_data.xlsx
Headers only, 0 rows
avatar.png
Single color #ffffff
notes.txt
Only whitespace

Threat Scanning

Automatic malware detection on every upload. Part of the pipeline — not a bolt-on. Infected files are rejected before they touch storage.

Scans every file automatically

One API Call

No orchestration needed. One call triggers validation, blank detection, scanning, and logging.

upload.ts
// One call. Full pipeline.
const result = await uplint.validate(
  file,
  {
    context: "patient-records",
    scan: true,
    detectBlanks: true
  }
);

Context-Based Rules

Profile photos need different rules than legal documents. Define validation contexts per use case — types, sizes, scanning depth.

patient-recordsPDF only · scan · audit
profile-photosJPG/PNG · <5MB · blanks
legal-docsPDF/DOCX · scan · log

Complete Audit Trail

Every file operation logged with full context. Who uploaded what, when, what was validated, what was flagged.

Compliance-ready from day one

The Full Pipeline

Validation, blank detection, threat scanning, and audit logging — all happen automatically on every upload. No separate services to wire together.

Validate
Detect blanks
Scan threats
Log & store

One API call triggers the entire pipeline automatically

Free forever — no signup required

See what your current validation misses

Run uplint on your uploads folder or directly against your S3 buckets. See how many blank PDFs, corrupt images, and invalid files are already in your system.

The CLI is how developers discover they need Uplint.

$pip install uplint
Ready for production?

Meet the platform

The CLI catches problems locally. The platform gives you everything you need for production — a security dashboard, analytics, audit logs, and API key management. All included in the free tier.

Uplint Platform — Security Dashboard showing threat detection, upload analytics, and audit logs

Security Dashboard

See every threat caught in real time. The moment Uplint flags a malicious upload, you'll know — with full context on what was detected and why.

Upload Analytics

Understand your upload patterns. Volume trends, file type breakdowns, rejection rates, and peak usage — all without setting up separate monitoring.

Audit Logs

Complete history of every file operation. Who uploaded what, when, what was validated, what was flagged. Compliance-ready from day one.

API Key Management

Scoped API keys with granular permissions. Create keys for different services, set rate limits, and revoke access instantly.

Sign Up Free — No Credit Card

500 uploads/month · 1 GB storage · 3 contexts · Full dashboard access

Enterprise-ready infrastructure

Built for teams that handle sensitive files

Multi-tenant by design, not by afterthought. Uplint was built from the ground up for SaaS platforms processing sensitive uploads across healthcare, finance, and legal.

Multi-Tenant Architecture

Per-tenant contexts, isolated quotas, and separate S3 credentials. Enterprise-ready from day one — not bolted on later.

End-to-End Encryption

Data encrypted at rest and in transit. Your files are protected at every stage of the pipeline.

Bring Your Own Bucket

Use your own AWS S3 credentials and buckets. Uplint validates and scans — your data stays in your infrastructure.

Full Audit Logging

Complete visibility into every file operation — uploads, validations, scans, rejections. Ready for compliance review.

Platform Status
Live
Files Validated Today
847K+8%
Threats Blocked
2.4K+12%
Active Tenants
340++15%
Uptime99.9%
Compliance
SOC 2 Type II
certified
GDPR
compliant
HIPAA
ready
ISO 27001
in progress
Scoped API Keys
Data Isolation
Auto-scan
Security Center

Every blocked upload tells a story

Threat actor profiling, behavioral pattern detection, and cross-entity investigation — built into your dashboard. See the bigger picture behind every blocked file.

FAQ

Frequently asked questions

Everything you need to know about Uplint. Can't find what you're looking for? Contact us.

They're file storage and CDN services. We're not. Uplint is a file validation and security layer — it sits in front of your uploads and validates integrity, detects blank content, scans for threats, and logs everything. You keep using your own storage (S3, GCS, whatever). We make sure what gets stored is legitimate.

Start with the CLI. Scale to the API.

Your stack has a missing layer

You don't build your own compute layer. You shouldn't build your own data intake layer either. Start free — the free tier is the real product, not a trial.

No credit card required · 500 uploads/month free · Full platform access