Everyday PDF work

Version 1.0.4 · Windows 10/11 · x64

Osenpa PDF Tools

Correct photographed paper documents, organize pages, compress, convert, run optical character recognition (OCR), watermark and protect PDFs on Windows. Each task creates a separate output so you can inspect the result before replacing the source.

No account required

Good fit for: People who need common PDF tools or want to clean up a photographed paper document before saving or running OCR.

Osenpa PDF Tools task selection screen

Product visualThese previews show the main PDF tools. Document correction, OCR, conversion, password, compression, and signature limits are explained below.

Decision summary

Choose a focused local PDF task

Choose one task at a time and keep the original. Check the pages, text, links, forms, and protection settings in the new file.

Fix photographed documents BETA

Correct perspective, page curve, rotation, shadows and uneven lighting, then save a separate A4 PDF or lossless PNG pages.

Merge and organize pages

Merge files or split by ranges, every page, every N pages or selected preview pages. Rotate, reorder, remove and extract pages into a separate result.

Compress and convert

Compress toward a practical limit, export pages to JPG or PNG, or create a PDF from supported images.

Make scans searchable

Use All languages after all 16 selectable packs are installed and verified, or choose one language for the whole document. Create a searchable PDF, UTF-8 text, or an in-app preview.

Apply document controls

Add a visible signature or watermark, add an open password, remove a password you know and review supported metadata fields.

Before you choose

Who this app fits

Good fit when

Choose it for photographed-document cleanup, page changes, conversion, OCR, compression and protection tasks.

Choose another tool when

Choose a full PDF editor, a certificate-signing service, or a tool designed for permanent redaction when the job needs those features.

Important limits

  • Fix Documents is Beta. Review every crop, split, rotation and corrected page before using the result.
  • Blur, glare and details missing from the source photo cannot be restored.
  • It is not a full text and layout editor.
  • OCR can misread names, numbers, tables, columns, handwriting and poor scans.
  • Compression toward a size is best effort, not an exact file-size guarantee.
  • Password removal requires the known password; unknown-password recovery is not provided.
  • A visible signature is not a certificate-based digital signature.
  • Merge does not preserve source bookmarks because bookmark copying is not available.
  • The Batch Queue lasts for the current app session and is not restored after the app closes.
  • Metadata cleanup is not redaction and does not remove visible sensitive content.
  • Corrupted, unusual, encrypted or signed PDFs can fail or lose behavior after modification.

System requirements

  • Windows 10 build 19041 or later, or Windows 11.
  • x64 processor.
  • Additional memory and time for large files, high-resolution pages and OCR.
Choose by need

Choose the PDF workflow by requirement

Scroll the table horizontally on a narrow screen.

Need Start with Verify afterward
Straighten a photographed page Fix Documents (Beta) Crop, page edges, orientation, lighting and readable detail
Combine or rearrange pages Merge or Organize Page count, order, links and forms
Make a scan searchable OCR with the matching language pack Names, numbers, columns and page alignment
Meet an upload limit Compression toward a target Reported bytes and visible quality
Create or export page images Images to PDF or PDF to JPG/PNG Order, resolution, text behavior and size
Add a signature mark Visible signature Recipient accepts a non-certificate mark
Protect or clean properties Password and metadata controls Known password, visible content and remaining properties
Workflow and data behavior

What happens from input to result

What is current in 1.0.4Version 1.0.4 adds BETA document-photo correction and improves local OCR, searchable PDFs, previews and accessibility.
  • Use Fix Documents (Beta) to correct perspective, page curve, rotation, shadows and uneven lighting in photographed paper documents.
  • Keep All languages selected after all 16 selectable OCR packs are installed and verified, or choose one language for the whole document.
  • Use Tesseract 5.5.3 with improved orientation, deskewing, reading order, small-text recognition and searchable PDF text placement.
  • Pan and zoom Original and Cleaned previews, use three focused Smart Recipes and follow clearer keyboard and screen-reader feedback.

Product facts and standalone file verified August 31, 2026.

Correct a photographed document BETAReview the detected page, correction and separate output before using it.
  • Add one or more supported images or scanned PDFs. Their order becomes the page order.
  • Review the four-corner crop, rotation, color mode and single-page or facing-page choice.
  • The app favors a complete page over a partly visible neighboring page. Ambiguous geometry keeps more of the frame for you to review.
  • Compare Original and Cleaned previews with drag-to-pan and 25% to 200% cursor-centered zoom.
  • Save a separate A4 portrait or landscape PDF. The corrected image keeps its shape, so margins may remain.
  • If you send the corrected result to OCR, the same crop, split, rotation and appearance choices are used.

Keep all four page corners visible, hold the camera parallel to the page and avoid glare or motion blur. Correction cannot recreate detail that is missing from the photo.

Start from one of three Smart RecipesEach recipe prepares a visible plan that you can review before processing.
  • Make a PDF easier to send
  • Meet an upload limit
  • Fix a scanned PDF BETA

A recipe chooses a starting workflow. Review its files, page choices, quality and output path before running it.

Adjust performance and warning thresholdsThese are settings, not permanent limits fixed to one value.
  • Parallel jobs can be set from 1 to 8. The starting value is 2.
  • Thumbnail cache can be set from 16 to 512 MiB. The starting value is 32 MiB.
  • The many-output warning can be set from 10 to 500 files. The starting value is 25.
  • The app keeps 20 recent items and allows up to 5 pinned tools.
Process a PDF without losing the sourceUse a separate output, then inspect the pages and content.

Open a representative source

Confirm that it is readable and that any required password is known.

Apply one focused task

Select pages, settings and a separate output path before processing.

Verify the created file

Check page structure, visible quality, searchable text, links, forms and security properties that matter.

Installed PDF tools run without internetDocument processing and installed optional components run locally; installing a missing component starts its download.

Stays on your PC

  • PDF reading, document correction, page operations, conversion, compression and OCR processing run on the PC.
  • Input and output files remain under the paths you choose.
  • Installed OCR language data and the document-correction component are stored locally.

Network actions and external links

  • A selectable OCR language pack or the document-correction component is downloaded only when you choose to install it, then verified before use.
  • A small update-metadata request runs once when the app starts, including after a legacy update toggle is turned off.
  • The supporter list is requested only when you open the Support page.
  • Support and download links open only after you select them.
  • Your PDFs and images are not uploaded for document correction or OCR.

See the portfolio-level explanation in Network & data.

Product tour

See the PDF workflow

Use these previews to find the task you need. The sections below explain OCR, conversion, protection, and signature limits.

6 product visualsSwipe, scroll or use the arrow keys.

1/6
  1. Osenpa PDF Tools task selection screen
    Product visualChoose the PDF task you need and review its inputs before processing.
  2. Smart Recipes in Osenpa PDF Tools
    Product visualStart a guided multi-step PDF workflow from a Smart Recipe.
  3. Page organizer in Osenpa PDF Tools
    Product visualReorder, rotate or remove pages while reviewing the document visually.
  4. PDF compression settings in Osenpa PDF Tools
    Product visualSet a compression goal, then read the exact saved size in the result panel.
  5. Searchable PDF OCR in Osenpa PDF Tools
    Product visualRun local OCR on a scanned PDF, then verify names, numbers and quotations.
  6. Password and metadata controls in Osenpa PDF Tools
    Product visualReview supported password and metadata options before saving a separate copy.
Official downloads

Download PDF Tools

For PDF Tools, Microsoft Store is the recommended install and update option. You can also find the standalone EXE and file-check guidance below.

System: PDF Tools requires an x64 PC running Windows 10 version 2004 (build 19041) or later, or Windows 11

Latest: 1.0.4Product facts and standalone file verified August 31, 2026
Standalone EXEAdvanced install, checksum and backup sources

Alternative install

Standalone EXE

Direct download for Windows

Download EXE

Windows SmartScreen checks publisher and reputation information for downloaded EXE files. If Windows shows a notice, confirm that you used the download link on this page before continuing. Understand Windows download notices.

Verify the exact file

Verified setup file

File: OsenpaPdfTools-Setup-1.0.4.exe

Size: 97,365,607 bytes (92.86 MiB)

Authenticode: Not signed

SHA-256
3851544af2c04f9aca7abd4ccd0de1b0ce9950fb3f86a3b21ec6341431b82718

The standalone package was refreshed on August 31, 2026 without changing the app version. It was verified with two local hashing tools. A match confirms identical bytes; it does not add a publisher signature or guarantee that a file is safe.

View this SHA-256 on VirusTotal

Download the file from an official link, then compare its name, size, and SHA-256 with the values above. The illustrated SHA-256 guide shows every step.

Backup links

Use the primary link above first. These sources provide the same verified release file.

Straight answers

Frequently asked questions

Can PDF Tools edit paragraph text inside a PDF?

No. It is a focused PDF toolkit for page, conversion, OCR, compression, signature, password, metadata, recipe and batch tasks, not a full text editor.

Can it turn PDF pages into JPG or PNG files?

Yes. It can render selected PDF pages as JPG or PNG images. Selectable text, links and forms do not carry into page images.

Which images can be used to create a PDF?

The documented inputs are JPG, JPEG, PNG, BMP, single-frame TIFF and WebP.

Can Fix Documents repair every document photo?

No. Fix Documents is Beta. It can correct perspective, page curve, rotation, shadows and uneven lighting, but it cannot restore detail lost to blur, glare or a cropped edge. Keep the original and review every corrected page.

Does OCR guarantee correct searchable text?

No. OCR output must be checked against the page image, especially for names, numbers, tables, columns and poor scans.

Can it remove a PDF password I do not know?

No. Password removal requires the known password and the app does not recover an unknown password.

Is a visible signature a digital certificate signature?

No. A visible signature is a page mark and does not provide cryptographic identity or tamper evidence.

Will compression always reach an exact file size?

No. Compression is best effort and the achievable size depends on the source and acceptable quality.

Does Merge keep the original PDF bookmarks?

No. Bookmark copying is not available, so inspect the merged document and rebuild required navigation with another tool before sharing it.

Is metadata cleanup the same as redaction?

No. Cleanup covers supported properties such as title, author, subject, keywords, creator, producer and custom details. It does not erase visible text, images, comments or every hidden data type.

Does the Batch Queue return after I close the app?

No. The queue belongs to the current app session. Finish or record important work before closing.

Are PDF files uploaded for processing?

No. Your PDFs and images are not uploaded for processing. The app can check update metadata, download an OCR pack or the correction component you request, and load the public Supporters list when you open Support.