Frequently Asked Questions

Yes! The free tier includes 5 invoices per month—no credit card required, no signup, no catch. Quotas reset on the 1st of each month. This covers most freelancers and consultants (who typically invoice 2-4 clients monthly).

Yes! This is the core value prop. Upload screenshots, email receipts, photos, scanned contracts—all mixed together, unorganized, different formats. The AI reads everything and figures it out. No need to rename files, sort by type, or organize folders.

PDFs, PNG, JPG/JPEG, HEIC (iPhone photos), WebP, TIFF, BMP. Maximum 10MB per file. Native PDFs, scanned documents, screenshots, and photos all work. See complete format list.

95%+ accuracy on typed documents (native PDFs, clear screenshots). 85-90% on scanned documents (depends on scan quality). Even with OCR errors, the AI's semantic understanding corrects most mistakes. You can edit any field before generating the PDF.

Documents are encrypted in transit (TLS), processed on secure servers, and automatically deleted after 24 hours. Only you can access your invoice. We don't permanently store documents or train AI models on your data. Third parties: OpenAI (AI processing), Vercel (infrastructure). Read our Privacy Policy.

Nope! Instant Invoice works instantly—no signup, no account, no login required. Just visit the site, upload files, download invoice. Your quota is tracked anonymously via browser cookie.

The "Generate PDF" button is disabled with a message: "Monthly quota exhausted. Resets on [date]." Your quota automatically resets on the 1st of next month. Paid tiers (unlimited invoices) coming soon.

Yes (though most users don't need to). The JSON editor shows all extracted fields. Click any field to modify client names, amounts, line items, dates, payment terms. Changes apply to the PDF when you generate.

Works with both! Scanned PDFs, photocopies, and images are processed via OCR (Optical Character Recognition) to extract text. Native PDFs use direct text extraction (faster and more accurate). Upload whatever you have—AI handles it.

Yes! This is a core feature. Upload receipt files with your contract. AI extracts line items (vendor, date, amount) AND automatically appends original receipt images to pages 2-N of the PDF. One clean PDF with everything included. See receipt attachment guide.

Two options: (1) Add context in notes field: "Client: Acme Corp, amount: $5,000" so AI prioritizes your instructions, or (2) Use the JSON editor to manually correct any field before PDF generation. AI is 95%+ accurate, so this is rare.

Under 10 seconds for typical invoices. Breakdown: OCR (5-7 seconds if images uploaded), AI extraction (3-5 seconds), PDF generation (2-3 seconds). Total: 10-15 seconds from upload to downloadable PDF.

Absolutely! Upload the same client contract each month with new timesheets/receipts. The AI extracts client info consistently. Many freelancers use this workflow: Month 1: upload contract + receipts. Month 2: upload same contract + new receipts. AI handles it.

OpenAI GPT-5-nano with structured outputs. Chosen for speed (3-5 second processing), cost ($0.15 per 1M tokens, 80% cheaper than GPT-4), and accuracy (95%+ on invoice extraction tasks). We use reasoning_effort=minimal for fastest response.

The AI extracts whatever currency appears in your documents (USD, EUR, GBP, CAD, etc.). If receipts have mixed currencies, each line item shows its original currency. Currently no automatic currency conversion.

No dedicated mobile app, but the website works perfectly on mobile browsers (Safari, Chrome). Responsive design optimized for phones and tablets. You can take photos of receipts with your phone camera and upload directly.