LocalFilePress | Secure Document Editor, Converter & Compressor

Aspect Ratio & Target Size

Select Image File

Click or Drag Image here PNG, JPG, WebP, GIF supported

Width (pixels)

Height (pixels)

Processed Asset Preview

Upload Images to Stitch

Drag & drop multiple images or click Combines into a structured pages A4 PDF

Select PDF Document Source

Click or drag PDF file here Splits pages into individual JPEG files

Target Export Format

Upload Source File

Drag or click to choose file Supports Images, TXT documents, or PDFs

Compression Action

Upload Target Asset(s)

Choose files or drop here Compresses images, PDFs, or builds folder ZIPs

Plain Text String

Base64 Encoded Output

Convert Any File to Base64 String

Select file to output Data URL string

Session Activity

Processed 0

Support Creator

LocalFilePress is built and maintained as a free project. If these offline browser tools save you time, please support the creator by buying a coffee!

100% Free: No paywalls or subscriptions
Private & Secure: All files remain on your device
Support Open Tools: Help keep the utilities running

Support the Creator

Frequently Asked Questions

Yes, completely. Your files never leave your computer. All processing, document editing, and text extraction is completed locally in your browser sandbox using WebAssembly and client-side JavaScript APIs. No data is sent to a server.

We leverage local JS engines (like JSZip for DEFLATE archiving and PDF.js + jsPDF for canvas scaling). These tools modify file bytes and write zip tables directly inside your browser's system memory before prompting your native browser save dialog.

The "Convert to Plain Text" tool maps embedded font character structures within digital documents. Scanned files require heavy Optical Character Recognition (OCR) script datasets, which are omitted to keep the core website lightweight and load instantly. Full OCR engine capabilities are available in the LocalFilePress Pro cloud edition!

Because everything runs completely client-side, the only limit is your local machine's system memory (RAM). For exceptionally large items (e.g. 500MB+ PDFs), your browser thread might briefly lock while allocating byte arrays, but it will execute locally.