Frequently Asked Questions

CÂU HỎI THƯỜNG GẶP

• How do I upload a PDF file?

  Click inside the white file drop area to browse your device, or drag and drop your document straight onto the page. Up to 10 files can be uploaded in a single operation, and processing starts as soon as you press the action button.

• How long does PDF conversion take?

  Most files are processed in a few seconds, and the download link appears immediately afterwards. Large documents, scanned pages, and batches of up to 10 files take longer, since every page is re-encoded. A slow connection also affects upload time.

• Is there a file size limit?

  Yes. Without an account you can process files up to 5 MB. Signing up for a free account raises the limit to 10 MB, and a paid plan raises it to 50 MB. If your document is larger, compress it first and then upload it again.

• How many files can I process at once?

  Without an account you can select up to 5 files in a single operation. A free account raises this to 10 files, and a paid plan to 50. If you choose more, the app asks you to reduce the selection and run the rest as a second batch.

• Is it safe to process PDF files online?

  Yes. Files are transferred over a secure connection, kept in protected storage, and removed automatically within 24 hours. No registration is required and no one else can access your documents, so the tools are suitable for confidential and business paperwork.

• How long are my files stored?

  Uploaded and processed files are automatically deleted from the servers 24 hours after the operation. Once that period passes, the download links stop working and no copy of the document remains. No one else has access to your files at any point.

• Do I need to install any software?

  No. Every tool runs entirely in your browser, so there is nothing to download, install, or update. The apps work on Windows, macOS, Linux, Android, and iOS in Chrome, Firefox, Safari, Opera, or Edge, with no plugins or extensions needed.

• How to edit a PDF?

  To edit a PDF, open the free online PDF Editor. Click inside the file drop area to upload your document — it renders automatically in the browser. Use the editor tools to change text, add images, draw freehand, or annotate, then download the edited PDF.

• How to merge PDF files?

  To combine PDF files, open the free online PDF Merger. Click inside the file drop area to upload your documents or drag and drop them — up to 5 files per operation. Arrange them in the order you want, click Merge, and download the combined PDF instantly.

• How to convert file to PDF?

  To convert a file to PDF, open the free online PDF converter. Click inside the file drop area to upload your document or drag and drop it — up to 5 files per operation. Click Convert, and the download link for your PDF is available instantly.

• How to convert image to PDF?

  To convert image to PDF, open the free online image to PDF converter. Upload your JPG, PNG, or other image file, or drag and drop it — up to 5 files per operation. Click Convert and download the resulting PDF instantly. Each image is converted into a separate PDF, so use the PDF Merger if you need them in one file.

• How to convert PDF to Word?

  To convert PDF to DOC, open the free online PDF to DOC converter. Click inside the file drop area to upload your PDF, or drag and drop it — up to 5 files per operation. Click the Convert button, then download the resulting DOC file instantly.

• How to convert PDF to JPG?

  To convert PDF to JPG, open the free online PDF to JPG converter. Click inside the file drop area to upload your document or drag and drop it — up to 5 files per operation. Click Convert, and each page becomes a JPG image ready to download instantly.

• How to compress a PDF?

  To compress a PDF, open the free online compression tool. Upload your document by dragging and dropping it or clicking inside the file area, select a compression mode — Low, Medium, or High — and click the Compress button. The download link for the smaller file appears within seconds.

• How to sign a PDF?

  To sign a PDF, open the free online PDF Signature app. Upload your document by dragging and dropping it or clicking inside the file area, create and place your signature, then apply it and download the signed PDF.