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Private by design

Files are converted in your browser and never uploaded to a server.

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Fast

No uploads, no queues. Most conversions finish in seconds.

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Free

No sign-up, no watermark, no daily limits.

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Any device

Works on Windows, Mac, Linux, Android and iPhone.

A simpler way to make PDFs

PDF has become the default way to share documents that need to look right. A job application, a university assignment, an invoice, a visa form, a price list for customers – all of them are expected as PDF, because a PDF opens the same way on every phone and computer. Yet the files we actually work with are Word documents, Excel sheets and photos. Getting from those everyday files to a clean PDF should not require expensive software, an account or a complicated menu. That is the idea behind this site: a small set of focused tools that each do one conversion well, for free, in a few clicks.

Your files stay on your device

Most online converters work by uploading your file to their servers, converting it there and sending the result back. That means a copy of your document – your CV, your bank statement, a scan of your ID card – sits on someone else's computer, at least for a while. We built these tools the other way round. When you choose a file, it is read by your own browser. The PDF is created on your device and saved directly to your downloads folder. The file is never sent to us, so there is nothing for us to store, read or lose.

This approach has two practical benefits besides privacy. First, it is fast: there is no upload progress bar and no queue. A batch of twenty photos becomes a PDF in seconds. Second, it works well on slow or limited internet. Once the page has loaded, converting files does not use extra data, which matters if you are on a mobile package or a shaky connection.

The tools

Word to PDF

Turn DOCX documents into PDF files that keep their headings, lists, tables and images. Choose A4 or Letter, portrait or landscape, and the margin size. If the reader needs to copy text from the file, the "Selectable-text PDF" option creates a PDF with real, searchable text through your browser's print dialog. It is ideal for CVs, cover letters, reports, assignments and letters.

Excel to PDF

Spreadsheets are notoriously hard to print. Columns spill onto extra pages and rows get cut in half. The Excel to PDF converter reads XLSX, XLS, CSV and ODS files, places every sheet on its own pages and scales wide sheets to fit the page width. Landscape is selected by default, and you can switch gridlines on or off for a cleaner report style. Long tables continue neatly from one page to the next.

JPG to PDF

Photos of receipts, documents and notes become a tidy PDF with one image per page. Phone photos are turned upright automatically. You can rotate pages, drag them into the right order and choose whether the page should be A4, Letter or exactly the size of each picture.

PNG to PDF

Screenshots, diagrams and designs are usually saved as PNG because the format keeps text and lines crisp. The PNG to PDF converter preserves that sharpness and places transparent images on a clean white page, so screenshots of payment confirmations or error messages stay perfectly readable.

Images to PDF

When your pictures come in different formats, the Images to PDF tool collects JPG, PNG, WebP, GIF and BMP files together and combines them into one PDF. It is the quickest way to put together scanned pages for an application, a set of receipts for an expense claim or a small portfolio.

How it works

Every tool follows the same three steps, so once you have used one, you know them all.

  1. Add your files. Click the big button or drag files onto the page. On a phone, you can pick from your gallery, camera roll or file manager.
  2. Adjust the settings. Arrange the order, rotate images, and choose page size, orientation and margins. Sensible defaults are already selected, so you can also skip this step.
  3. Convert and download. Press "Convert to PDF". The finished PDF downloads immediately, and you can start again with new files.

Built for real everyday tasks

We designed the tools around the situations people actually face:

  • Students converting assignments to PDF before submitting them online, or turning photos of handwritten notes into a single study file.
  • Job seekers saving a CV and cover letter as PDF so the layout looks exactly as intended to the recruiter.
  • Small businesses sending price lists, invoices and quotations created in Word or Excel as professional PDF files.
  • Anyone applying for something – a visa, a bank account, an admission – who needs to upload scanned documents as one PDF.
  • Teachers sharing worksheets and mark sheets that open the same way on every student's phone.

Works on every device

The site is responsive and tested on desktop and mobile browsers. On a computer you can drag and drop files and reorder pages with the mouse. On a phone, large buttons and arrow controls make it just as easy to sort pages with your thumb. There is nothing to install and no app to download. Bookmark the page and it is ready whenever you need it.

Honest about what browser conversion can do

Because the conversion runs in your browser rather than in desktop software, very complex Word layouts – text boxes, multi-column pages, headers and footers – and Excel charts are simplified. For the documents most people convert every day, the result is clean and accurate. We would rather tell you this up front than surprise you after the download. For pixel-perfect conversion of complex designs, the original desktop application's "Save as PDF" option is still the best choice.

Tips for better PDFs

  • Name your files clearly before converting – the PDF keeps the same name, which helps the person receiving it.
  • Use A4 for documents that will be printed in most countries, and Letter for the United States and Canada.
  • Choose "Fit to image" for screenshots so there is no empty white space around them.
  • Use landscape for wide tables in Word and Excel.
  • Check the order of pages in the thumbnail view before you convert a batch of images – it saves redoing the file later.

PDF, Word or image: which should you send?

Send a Word or Excel file when the other person needs to edit it – for example a draft you are writing together, or a budget someone else will update. Send a PDF when the document is finished and should look exactly the same for everyone: CVs, applications, invoices, certificates, reports and anything that will be printed. A PDF also hides the clutter of comments, hidden columns and tracked changes that sometimes travel along inside office files.

Send separate images only when the receiver wants to use each picture on its own, such as product photos for a website. For documents made of several photos or scans, one PDF is far easier to open, read in order, store and print. Many portals – visa, university and job sites – accept only one PDF per upload, which is exactly what the Images to PDF tool produces.

Free, with no catches

There is no sign-up, no watermark stamped across your pages and no limit of "two files per day". Because the work happens on your own device, the tools cost very little to run, and that is what keeps them free for everyone. If something does not work as expected, or you would like a new tool added, the contact page is always open – feedback from users decides what we build next.

Frequently asked questions

Is PDF Spark really free?

Yes. All tools are free to use without an account, without watermarks and without daily limits.

Are my files uploaded to your server?

No. Files are opened and converted inside your browser and the PDF is saved directly to your device. We never receive your documents.

Do I need to install anything?

No. The tools work in any modern browser – Chrome, Edge, Firefox, Safari and Samsung Internet – on Windows, macOS, Linux, Android and iPhone.

Can I use the converters on my phone?

Yes. The site is fully responsive. You can pick files from your gallery or file manager and download the PDF on your phone.

Which formats can I convert to PDF?

Word (DOCX), Excel and other spreadsheets (XLSX, XLS, CSV, ODS), and images (JPG, PNG, WebP, GIF, BMP).

Can I combine several images into one PDF?

Yes. Use Images to PDF, JPG to PDF or PNG to PDF, add all your pictures, put them in order and keep the merge option on.