The most powerful photo & PDF editor for Windows. Edit images with Paint, extract text with OCR, and export flawless PDFs — all in one free app.
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APDocs Studio is a professional-grade photo and PDF editing suite built for Windows. It brings together everything you need to work with documents and images — deep image editing, Tesseract-powered OCR, PDF import/export, and a unique Microsoft Paint integration that lets you use Paint's Select & Cut tools for pixel-perfect edits.
No subscriptions. No cloud. No bloat. Just a fast, capable desktop app that runs entirely on your machine.
| Feature | Description |
|---|---|
| Brightness & Contrast | Fine-tune exposure and tonal range on any image |
| Saturation & Hue | Correct color casts and shift hues precisely |
| Sharpness | Enhance detail with adjustable sharpening |
| Crop & Rotate | Trim edges, fix orientation, flip pages |
| Auto Deskew | Straighten tilted scans with one click |
| Black & White | Convert to grayscale or true black & white |
| Blank Page Detection | Automatically remove empty pages from batches |
| Feature | Description |
|---|---|
| PDF Import | Open any existing PDF and edit page by page |
| PDF Export | Save as standard or searchable PDF |
| Merge | Combine multiple images into a single PDF |
| Page Reorder | Drag and drop pages into any order |
| Compression Control | Balance file size vs. image quality |
| OCR Text Layer | Embed invisible searchable text into exported PDFs |
The only editor that lets you open any image directly in Microsoft Paint for precision editing using Paint's native Select & Cut tools. Changes sync back to APDocs Studio automatically.
Powered by Tesseract, one of the most accurate open-source OCR engines available. Extract text from any image in 40+ languages and create fully searchable, copy-pasteable PDFs.
Microsoft Paint is built into every Windows PC. APDocs Studio uses it as a precision editing tool.
1. Right-click a page in APDocs Studio → Edit with Paint
2. In Paint's Home tab, click Select → Rectangular selection
3. Draw a box around the area you want to remove
4. Press Delete or Ctrl+X to cut it out (fills with white)
5. Press Ctrl+S to save — APDocs Studio reloads it instantly
1. Click Select → Free-form selection
2. Draw around the exact shape you want to keep
3. Ctrl+C → Ctrl+N → Ctrl+V to paste onto a clean canvas
4. Save → export as PDF from APDocs Studio
1. Right-click Color 2 in Paint → set to white
2. Use Rectangular Select to box the watermark
3. Press Delete — it fills with white
4. Ctrl+S → clean PDF export in APDocs Studio
1. Draw a Rectangular selection around the region to keep
2. Click Image → Crop (or Ctrl+Shift+X on Windows 11)
3. Ctrl+S → APDocs Studio picks up the cropped image
- Windows 10 / 11 (64-bit)
- .NET 9 Runtime
- Microsoft Paint (pre-installed on all Windows PCs)
git clone https://github.com/atharvpawar16/APDocsStudio.git
cd APDocsStudio
dotnet build APDocsStudio.sln
dotnet run --project APDocsStudio.csproj| Action | Shortcut |
|---|---|
| Save as PDF | Ctrl + S |
| Save as Image | Ctrl + I |
| Import File | Ctrl + O |
| Run OCR | Ctrl + Alt + O |
| Batch Process | Ctrl + B |
| Rotate Left | Ctrl + Shift + ← |
| Rotate Right | Ctrl + Shift + → |
| Email PDF | Ctrl + E |
Ctrl + P |
|
| Zoom In | Ctrl + + |
| Zoom Out | Ctrl + - |
| Undo | Ctrl + Z |
| Layer | Technology |
|---|---|
| Language | C# 12 |
| Runtime | .NET 9 |
| UI Framework | Eto.Forms + WinForms |
| Dependency Injection | Autofac |
| OCR Engine | Tesseract |
| PDF Processing | PdfSharp + Pdfium |
| Image Processing | GDI+ / System.Drawing |
| Logging | NLog |
| IPC | gRPC / Protobuf |
| Serialization | Newtonsoft.Json |
| Barcode Detection | ZXing.Net |
| External Editor | Microsoft Paint |
APDocs Studio is built on top of several open-source libraries. In accordance with their licenses, the following attributions are required:
- NAPS2 — Core document processing, image pipeline, OCR integration, and PDF engine. Licensed under GPL-2.0. Copyright © NAPS2 Contributors.
APDocs Studio itself is also distributed under the GPL-2.0 license in compliance with the above. See LICENSE for full terms.
As required by GPL-2.0: the source code of APDocs Studio is publicly available in this repository. Any modifications made to GPL-licensed components are included here.
Made with ❤️ by Atharv Pawar
If you find this useful, consider starring the repo!