# an invoice OCR API

**There is demand and clear pain, but the market is already crowded with live OCR APIs and workflow tools.**

Confidence: high  ·  97 signals  ·  checked 2026-08-01

[Full report with live links](https://showsitsworks.com/idea/an-invoice-ocr-api)

## Who is already building this

*From data*

- chiupam/invoiceOCR is an active Python project with 51 stars and a last push on 2026-07-31. It is built on Tencent Cloud OCR for invoice recognition and management, including auto extraction, image processing, project classification, and export.
  - [chiupam/invoiceOCR](https://github.com/chiupam/invoiceOCR) `github` — 2025-03-21
- datpham0412/invoice-processor has 39 stars and last pushed on 2025-07-03, so it is stale. It is a full-stack invoice processing and purchase-order matching system using Azure Form Recognizer OCR, Azure Blob Storage, React,.NET 6, and Docker Compose.
  - [datpham0412/invoice-processor](https://github.com/datpham0412/invoice-processor) `github` — 2025-05-22
- Veryfi has several maintained SDKs for its OCR API: veryfi-nodejs has 32 stars and last pushed on 2026-04-09, veryfi-python has 30 stars and last pushed on 2026-05-14, and veryfi-go has 24 stars with a last push on 2026-07-24.
  - [veryfi/veryfi-nodejs](https://github.com/veryfi/veryfi-nodejs) `github` — 2021-06-30
  - [veryfi/veryfi-python](https://github.com/veryfi/veryfi-python) `github` — 2020-04-22
  - [veryfi/veryfi-go](https://github.com/veryfi/veryfi-go) `github` — 2021-05-20
- Veryfi also has smaller client libraries that are still maintained, including veryfi-php with 15 stars and last push on 2025-11-26, veryfi-ruby with 8 stars and last push on 2026-07-03, veryfi-kotlin with 6 stars and last push on 2026-02-10, and veryfi-swift with 11 stars but a last push on 2025-08-11.
  - [veryfi/veryfi-php](https://github.com/veryfi/veryfi-php) `github` — 2021-11-02
  - [veryfi/veryfi-swift](https://github.com/veryfi/veryfi-swift) `github` — 2021-07-26
  - [veryfi/veryfi-ruby](https://github.com/veryfi/veryfi-ruby) `github` — 2021-09-03
  - [veryfi/veryfi-kotlin](https://github.com/veryfi/veryfi-kotlin) `github` — 2021-12-21
- There are also smaller open-source invoice OCR projects such as jyothish-ram/invoice_ocr_api with 3 stars and last push on 2024-09-10, timhaiz/invoice-manager with 3 stars and last push on 2025-09-18, and natgluons/AI-docs-analyzer-API with 3 stars and last push on 2025-05-26.
  - [jyothish-ram/invoice_ocr_api](https://github.com/jyothish-ram/invoice_ocr_api) `github` — 2024-09-09
  - [timhaiz/invoice-manager](https://github.com/timhaiz/invoice-manager) `github` — 2025-09-06
  - [natgluons/AI-docs-analyzer-API](https://github.com/natgluons/AI-docs-analyzer-API) `github` — 2025-05-26

## What people actually say

*From data*

- "I have an inconsistent result when extracting a table from a Czech invoice." One user says the cloud API works, but local OCR fails on the same invoice.
  - [Table extraction succeeds on Cloud API but fails locally for one Czech invoice — need OCR bypass to Google OCR](https://github.com/NanoNets/docstrange/issues/24) `githubissues` — 2025-10-08
- "I need reliable table extraction for Czech invoices." This is a direct complaint about accuracy on a real invoice format.
  - [Table extraction succeeds on Cloud API but fails locally for one Czech invoice — need OCR bypass to Google OCR](https://github.com/NanoNets/docstrange/issues/24) `githubissues` — 2025-10-08
- "Some of the text could not be recognised and extracted." The user is describing OCR misses on invoice fields in OpenAI Vision.
  - [GPT 4 Vision Model misrepresentation of text from an Invoice (OCR Task)](https://community.openai.com/t/gpt-4-vision-model-misrepresentation-of-text-from-an-invoice-ocr-task/734279) `discourse` — 2024-05-02
- "I need to extract multiline data from mulitpage PDF to the populate excel sheet" A n8n user is struggling with multi-page invoice-like PDFs and spreadsheet extraction.
  - [Need to extract multiline data from mulitpage PDF to the populate excel sheet](https://community.n8n.io/t/need-to-extract-multiline-data-from-mulitpage-pdf-to-the-populate-excel-sheet/142896/2) `discourse` — 2025-07-03
- "The whole idea for this came from my old job as a consultant... it felt like every other project involved scraping data from images—passports, receipts, driver's licenses, you name it." This HN founder voice shows document extraction is a repeated pain, not a one-off.
  - [Show HN: I built a tool to create custom OCR APIs in minutes, no training needed](https://news.ycombinator.com/item?id=45887602) `hackernews` — 2025-11-11

## People asking to be sold to

*From data*

- "I need reliable table extraction for Czech invoices." That is an explicit need for a better product, not just a complaint.
  - [Table extraction succeeds on Cloud API but fails locally for one Czech invoice — need OCR bypass to Google OCR](https://github.com/NanoNets/docstrange/issues/24) `githubissues` — 2025-10-08
- "I would definitely like to" use something that avoids waiting for invoices to go unpaid and then filing later. The speaker is asking for a pre-filing invoice workflow.
  - [I joined landlord groups to persuade them to be better people to their tenants](https://news.ycombinator.com/item?id=40254781) `intent` — 2024-05-04
- "Does anyone know of an open source tool that reliable extracts data from PDF invoices?" This is a direct request for a solution.
  - [Show HN: BillBuddy – Automated Invoice Processing](https://news.ycombinator.com/item?id=15447568) `intent` — 2017-10-11
- "I’m looking at selling my own adverts and I have advertisers wanting to give me their money and copy. Does anyone know of a system to automate that stuff?" This is a broader automation want, but it is still first-hand willingness to adopt software for paperwork-heavy workflows.
  - [So you were thinking of using adsense to generate income? Think again](https://news.ycombinator.com/item?id=1607298) `intent` — 2010-08-16
- "We tried using GPT-4 Vision and various OCR APIs to automate our Accounts Payable." The founder says they already tried alternatives and still hit a hard edge case on the remaining 10%.
  - [Show HN: API that falls back to humans when AI is unsure](https://news.ycombinator.com/item?id=46593987) `hackernews` — 2026-01-12

## Where the opening is

*Model estimate*

- The signals do not show a clear gap in basic invoice OCR extraction. Existing products already cover invoice-to-JSON extraction, SDKs, table extraction, and workflow integrations.
  - [chiupam/invoiceOCR](https://github.com/chiupam/invoiceOCR) `github` — 2025-03-21
  - [datpham0412/invoice-processor](https://github.com/datpham0412/invoice-processor) `github` — 2025-05-22
  - [veryfi/veryfi-nodejs](https://github.com/veryfi/veryfi-nodejs) `github` — 2021-06-30
  - [veryfi/veryfi-python](https://github.com/veryfi/veryfi-python) `github` — 2020-04-22
  - [veryfi/veryfi-go](https://github.com/veryfi/veryfi-go) `github` — 2021-05-20
  - [npm: n8n-nodes-deep-ocr](https://www.npmjs.com/package/n8n-nodes-deep-ocr) `registries` — 2026-07-12
  - [Invoice OCR API – Extract Invoice Data & Line Items Automatically | Mindee](https://www.mindee.com/product/invoice-ocr-api) `tavily`
  - [OCR API | Qvalia](https://qvalia.com/features/ocr-api) `tavily`
  - [Invoices OCR API | Veryfi](https://www.veryfi.com/invoice-ocr-api) `tavily`
- The clearest opening is not raw OCR. It is reliability on messy, local, or language-specific invoices, plus better handling of tables, multi-page PDFs, and line items when the first pass fails.
  - [Table extraction succeeds on Cloud API but fails locally for one Czech invoice — need OCR bypass to Google OCR](https://github.com/NanoNets/docstrange/issues/24) `githubissues` — 2025-10-08
  - [GPT 4 Vision Model misrepresentation of text from an Invoice (OCR Task)](https://community.openai.com/t/gpt-4-vision-model-misrepresentation-of-text-from-an-invoice-ocr-task/734279) `discourse` — 2024-05-02
  - [Show HN: API that falls back to humans when AI is unsure](https://news.ycombinator.com/item?id=46593987) `hackernews` — 2026-01-12
  - [Need to extract multiline data from mulitpage PDF to the populate excel sheet](https://community.n8n.io/t/need-to-extract-multiline-data-from-mulitpage-pdf-to-the-populate-excel-sheet/142896/2) `discourse` — 2025-07-03
- There is also a practical gap around integrations and fallback logic: several threads mention OCR plus AI cleanup, Google Sheets, n8n, or human fallback, which suggests buyers want a workflow layer more than another OCR endpoint.
  - [feat: Integrate real-time invoice OCR using Google Gemini Vision API](https://github.com/Futhark1393/mukellef-ai-cfo-assistant/issues/34) `githubissues` — 2026-05-06
  - [Need Help with Developing a System for Extracting Data from Hebrew Invoices Using Google Vision OCR and GPT](https://community.openai.com/t/need-help-with-developing-a-system-for-extracting-data-from-hebrew-invoices-using-google-vision-ocr-and-gpt/136402) `discourse` — 2023-04-03
  - [How to Process PDF Files with OpenAI's Tools and APIs for Invoice Automation?](https://community.openai.com/t/how-to-process-pdf-files-with-openais-tools-and-apis-for-invoice-automation/1092083) `discourse` — 2025-01-15
  - [N8n invoice system: I need help](https://community.n8n.io/t/n8n-invoice-system-i-need-help/143229) `discourse` — 2025-07-03
  - [(Enterprise) Automate Invoice Extraction to Google Sheets (Google Drive → ParserData)](https://community.n8n.io/t/enterprise-automate-invoice-extraction-to-google-sheets-google-drive-parserdata/252560) `discourse` — 2026-01-19
- The data does not show a strong wedge for 'invoice OCR API' as a standalone category unless it beats established APIs on accuracy, or packages the extraction with validation, retries, and downstream accounting export.
  - [Automatic data extraction (OCR through a service API) from receipts and invoices in the expense submission flow](https://github.com/opencollective/opencollective/issues/6865) `githubissues` — 2023-07-11
  - [Show HN: API that falls back to humans when AI is unsure](https://news.ycombinator.com/item?id=46593987) `hackernews` — 2026-01-12
  - [Invoices OCR API | Veryfi](https://www.veryfi.com/invoice-ocr-api) `tavily`
  - [Invoice OCR in 2026: From Document to Accounting Systems](https://unstract.com/blog/best-ocr-for-invoice-processing-invoice-ocr) `tavily`

## How big the market might be

*Model estimate*

- This search found 4 named open-source projects, with 2 active, 1 slow, and 1 dead.
- The biggest maintained competitor in the signals is Veryfi's ecosystem, with SDKs ranging from 32 stars on veryfi-nodejs to 24 stars on veryfi-go and 30 stars on veryfi-python.
  - [veryfi/veryfi-nodejs](https://github.com/veryfi/veryfi-nodejs) `github` — 2021-06-30
  - [veryfi/veryfi-python](https://github.com/veryfi/veryfi-python) `github` — 2020-04-22
  - [veryfi/veryfi-go](https://github.com/veryfi/veryfi-go) `github` — 2021-05-20
- The largest usage signal is invoiceshelf/invoiceshelf in Docker Hub with 603,882 pulls, which shows meaningful adjacent invoicing usage even though it is not pure OCR.
  - [docker: invoiceshelf/invoiceshelf](https://hub.docker.com/r/invoiceshelf/invoiceshelf) `registries`
- There are 17 first-hand complaints, 8 stated wants, 1 unsolved Stack Exchange question with 327 views, and matching discussion threads in 4 communities: community.n8n.io, community.openai.com, discuss.python.org, and forum.djangoproject.com.
  - [Azure Forms Recognizer Prebuilt-Invoice crashes during processing a file with "Name or service not known"](https://stackoverflow.com/questions/74886840/azure-forms-recognizer-prebuilt-invoice-crashes-during-processing-a-file-with-n) `stackexchange` — 2022-12-22
  - [Need to extract multiline data from mulitpage PDF to the populate excel sheet](https://community.n8n.io/t/need-to-extract-multiline-data-from-mulitpage-pdf-to-the-populate-excel-sheet/142896/2) `discourse` — 2025-07-03
  - [N8n invoice system: I need help](https://community.n8n.io/t/n8n-invoice-system-i-need-help/143229) `discourse` — 2025-07-03
  - [Need Help Integrating Google Drive, Nanonets OCR, and Google Sheets for Invoice Automation](https://community.n8n.io/t/need-help-integrating-google-drive-nanonets-ocr-and-google-sheets-for-invoice-automation/86039) `discourse` — 2025-03-09
  - [(Enterprise) Automate Invoice Extraction to Google Sheets (Google Drive → ParserData)](https://community.n8n.io/t/enterprise-automate-invoice-extraction-to-google-sheets-google-drive-parserdata/252560) `discourse` — 2026-01-19

## What could go wrong

*Model estimate*

- Competition risk is high: Veryfi is already maintained across multiple languages, Mindee appears in comparison and integration pages, and other OCR/document platforms are already targeting invoice extraction.
  - [veryfi/veryfi-nodejs](https://github.com/veryfi/veryfi-nodejs) `github` — 2021-06-30
  - [veryfi/veryfi-python](https://github.com/veryfi/veryfi-python) `github` — 2020-04-22
  - [veryfi/veryfi-go](https://github.com/veryfi/veryfi-go) `github` — 2021-05-20
  - [altafino/mindee-client](https://github.com/altafino/mindee-client) `github` — 2023-05-08
  - [Invoice OCR API – Extract Invoice Data & Line Items Automatically | Mindee](https://www.mindee.com/product/invoice-ocr-api) `tavily`
  - [OCR API | Qvalia](https://qvalia.com/features/ocr-api) `tavily`
  - [Invoice OCR API: 10 Best Software Tools Compared 2026](https://www.edenai.co/post/top-10-ocr-invoice-parser-api) `tavily`
  - [Invoices OCR API | Veryfi](https://www.veryfi.com/invoice-ocr-api) `tavily`
- Accuracy risk is the main product risk. The complaints are about missed text, failed local extraction, line items, tables, Hebrew invoices, Czech invoices, and multipart PDFs.
  - [Table extraction succeeds on Cloud API but fails locally for one Czech invoice — need OCR bypass to Google OCR](https://github.com/NanoNets/docstrange/issues/24) `githubissues` — 2025-10-08
  - [GPT 4 Vision Model misrepresentation of text from an Invoice (OCR Task)](https://community.openai.com/t/gpt-4-vision-model-misrepresentation-of-text-from-an-invoice-ocr-task/734279) `discourse` — 2024-05-02
  - [Need Help with Developing a System for Extracting Data from Hebrew Invoices Using Google Vision OCR and GPT](https://community.openai.com/t/need-help-with-developing-a-system-for-extracting-data-from-hebrew-invoices-using-google-vision-ocr-and-gpt/136402) `discourse` — 2023-04-03
  - [Need to extract multiline data from mulitpage PDF to the populate excel sheet](https://community.n8n.io/t/need-to-extract-multiline-data-from-mulitpage-pdf-to-the-populate-excel-sheet/142896/2) `discourse` — 2025-07-03
- Workflow scope creep is another risk. Several users want OCR plus cleanup, validation, accounting export, Sheets sync, n8n integration, or human fallback, which can turn a simple API into a platform.
  - [feat: Integrate real-time invoice OCR using Google Gemini Vision API](https://github.com/Futhark1393/mukellef-ai-cfo-assistant/issues/34) `githubissues` — 2026-05-06
  - [Show HN: API that falls back to humans when AI is unsure](https://news.ycombinator.com/item?id=46593987) `hackernews` — 2026-01-12
  - [How to Process PDF Files with OpenAI's Tools and APIs for Invoice Automation?](https://community.openai.com/t/how-to-process-pdf-files-with-openais-tools-and-apis-for-invoice-automation/1092083) `discourse` — 2025-01-15
  - [N8n invoice system: I need help](https://community.n8n.io/t/n8n-invoice-system-i-need-help/143229) `discourse` — 2025-07-03
  - [(Enterprise) Automate Invoice Extraction to Google Sheets (Google Drive → ParserData)](https://community.n8n.io/t/enterprise-automate-invoice-extraction-to-google-sheets-google-drive-parserdata/252560) `discourse` — 2026-01-19
- A generic API is easy to compare on price and accuracy, so without a strong niche such as language-specific invoices, tables, or compliance, the product will be hard to defend.
  - [Invoice OCR API for Logistics Expense Tracking Automation](https://news.ycombinator.com/item?id=47362152) `hackernews` — 2026-03-13
  - [Invoice OCR API for Automated GST Data Extraction in India](https://news.ycombinator.com/item?id=47348462) `hackernews` — 2026-03-12
  - [E-invoice compliance coming into force in 2026](https://dev.to/westpoint_io/e-invoice-compliance-coming-into-force-in-2026-2lmp) `devto` — 2026-05-18
  - [Invoices OCR API | Veryfi](https://www.veryfi.com/invoice-ocr-api) `tavily`
  - [Invoice OCR in 2026: From Document to Accounting Systems](https://unstract.com/blog/best-ocr-for-invoice-processing-invoice-ocr) `tavily`

## What to do this week

*Model estimate*

- Build around one hard case first: table and line-item extraction for messy invoices in a specific language or format, since that is where users are already complaining.
  - [Table extraction succeeds on Cloud API but fails locally for one Czech invoice — need OCR bypass to Google OCR](https://github.com/NanoNets/docstrange/issues/24) `githubissues` — 2025-10-08
  - [GPT 4 Vision Model misrepresentation of text from an Invoice (OCR Task)](https://community.openai.com/t/gpt-4-vision-model-misrepresentation-of-text-from-an-invoice-ocr-task/734279) `discourse` — 2024-05-02
  - [Need Help with Developing a System for Extracting Data from Hebrew Invoices Using Google Vision OCR and GPT](https://community.openai.com/t/need-help-with-developing-a-system-for-extracting-data-from-hebrew-invoices-using-google-vision-ocr-and-gpt/136402) `discourse` — 2023-04-03
- Ship a benchmark page with real invoices and show success rates for OCR, table extraction, and field extraction, because the market is already skeptical about 90% accuracy being enough.
  - [Show HN: API that falls back to humans when AI is unsure](https://news.ycombinator.com/item?id=46593987) `hackernews` — 2026-01-12
- Include validation and fallback in the first version: schema checks, retry with a stronger model, and optional human review for low-confidence documents.
  - [feat: Integrate real-time invoice OCR using Google Gemini Vision API](https://github.com/Futhark1393/mukellef-ai-cfo-assistant/issues/34) `githubissues` — 2026-05-06
  - [Show HN: API that falls back to humans when AI is unsure](https://news.ycombinator.com/item?id=46593987) `hackernews` — 2026-01-12
  - [How to Process PDF Files with OpenAI's Tools and APIs for Invoice Automation?](https://community.openai.com/t/how-to-process-pdf-files-with-openais-tools-and-apis-for-invoice-automation/1092083) `discourse` — 2025-01-15
- Add one workflow integration early, such as n8n, Google Sheets, or accounting export, because the strongest signals are about automation after extraction, not extraction alone.
  - [N8n invoice system: I need help](https://community.n8n.io/t/n8n-invoice-system-i-need-help/143229) `discourse` — 2025-07-03
  - [Need Help Integrating Google Drive, Nanonets OCR, and Google Sheets for Invoice Automation](https://community.n8n.io/t/need-help-integrating-google-drive-nanonets-ocr-and-google-sheets-for-invoice-automation/86039) `discourse` — 2025-03-09
  - [(Enterprise) Automate Invoice Extraction to Google Sheets (Google Drive → ParserData)](https://community.n8n.io/t/enterprise-automate-invoice-extraction-to-google-sheets-google-drive-parserdata/252560) `discourse` — 2026-01-19
  - [Invoice OCR in 2026: From Document to Accounting Systems](https://unstract.com/blog/best-ocr-for-invoice-processing-invoice-ocr) `tavily`
- If you cannot beat established APIs on a narrow niche, do not launch a broad invoice OCR API; the signals point to a crowded and already-validated category.
  - [chiupam/invoiceOCR](https://github.com/chiupam/invoiceOCR) `github` — 2025-03-21
  - [datpham0412/invoice-processor](https://github.com/datpham0412/invoice-processor) `github` — 2025-05-22
  - [veryfi/veryfi-nodejs](https://github.com/veryfi/veryfi-nodejs) `github` — 2021-06-30
  - [veryfi/veryfi-python](https://github.com/veryfi/veryfi-python) `github` — 2020-04-22
  - [veryfi/veryfi-go](https://github.com/veryfi/veryfi-go) `github` — 2021-05-20
  - [Invoice OCR API – Extract Invoice Data & Line Items Automatically | Mindee](https://www.mindee.com/product/invoice-ocr-api) `tavily`
  - [Invoices OCR API | Veryfi](https://www.veryfi.com/invoice-ocr-api) `tavily`

## Competitor strength

| Project | Stars | Downloads/mo | Activity |
|---|---:|---:|---|
| [chiupam/invoiceOCR](https://github.com/chiupam/invoiceOCR) | 51 | — | active |
| [datpham0412/invoice-processor](https://github.com/datpham0412/invoice-processor) | 39 | — | dead |
| [veryfi/veryfi-nodejs](https://github.com/veryfi/veryfi-nodejs) | 32 | — | slow |
| [veryfi/veryfi-python](https://github.com/veryfi/veryfi-python) | 30 | — | active |

## Domain names

- `invoiceocr.com` — taken
- `invoiceocr.io` — available
- `invoice.com` — taken
- `getinvoice.com` — taken

---

Sources searched: hackernews (30), github (20), githubissues (5), discourse (12), intent (8), stackexchange (1), registries (3), tavily (8), devto (10)

Generated by Shows Its Work — https://showsitsworks.com/idea/an-invoice-ocr-api
Findings link to their sources. Estimates are marked as estimates.