Does resizing make my PDF file smaller in megabytes?

Not necessarily. Resize PDF changes each page's physical dimensions and scales the content to match; it is not a file-size compressor. It does not re-sample images or remove objects, so the downloaded file can be a similar size to the original, and sometimes larger. A smaller file requires image down-sampling and object optimization, which is a different task.

What is the difference between Fit and Stretch?

Fit keeps the original proportions by scaling the content with one factor so it fits inside the target size, then centering it with even margins where the aspect ratios differ. Stretch scales width and height independently so the content fills the entire target page edge to edge, which can change its proportions.

Is my PDF uploaded to a server?

No. The file is read and resized entirely inside your browser using JavaScript. Nothing is uploaded, stored, or sent anywhere, so the document remains on your own device from start to finish.

Can I resize each page differently?

Every page is rescaled with the same setting in one pass. In Standard size mode, each page is measured individually and scaled to the chosen paper size, so a document with mixed original page sizes comes out uniform. In Percentage mode, the same factor is applied to every page relative to its own current size.

What happens to scanned or rotated pages?

Resizing uses each page's unrotated orientation but preserves any existing rotation flag. A portrait target can therefore still display sideways on a page with a rotation flag. The tool shows a note when it detects a rotated page; reset the rotation first if the result looks turned.

Resize a PDF Without Changing Its File Size

If you searched for “convert PDF resize 500KB,” you may be trying to solve two different problems at once. A PDF can need different page dimensions for printing, binding, or submission, or it can need fewer bytes to meet an email or upload limit. Resize PDF addresses the first problem. It does not promise a particular file size and does not work as a PDF compressor.

That distinction is important. A page is measured by its width and height in PDF points, while a file's size is measured in bytes, kilobytes, or megabytes. Changing the page geometry can be exactly what you need even when the downloaded PDF remains similar in size to the original—or becomes larger. If your only target is 500 KB, you need a process that reduces image and object data instead.

What PDF Resizing Actually Changes

Resize PDF changes the physical page dimensions of every page and scales the page content to match the new geometry. PDF points are the unit used for page size, with 72 points equal to one inch. The process preserves the relative placement of the content as the page and its contents are scaled together.

The tool offers three standard targets:

Standard size	Width in PDF points	Height in PDF points
A4	595	842
US Letter	612	792
US Legal	612	1008

Choose portrait or landscape with the standard size. These dimensions are applied in PDF points rather than kilobytes, so selecting A4, Letter, or Legal tells the tool how to reshape each page; it does not set an output file size.

Fit, Stretch, or Percentage?

The scaling mode determines how the original content adapts to the selected page.

Fit keeps the original proportions. The tool calculates one scale factor, makes the entire content fit inside the target rectangle, and centers it there. When the source and target shapes have different aspect ratios, the result includes even margins. Nothing is distorted or cut off, but more blank space can appear around the content.

Stretch uses separate factors for width and height. The content is expanded in each direction until it fills the entire target page from edge to edge. This guarantees a full-page result, but the content's proportions can change. Stretch is appropriate when filling the frame exactly matters more than preserving the original shape.

Percentage applies one factor to every page relative to its current size. Entering 50 percent halves the dimensions of each page, while 200 percent doubles them. The page content scales with the geometry, so text, images, and other page elements retain their relative positions. Percentage mode is useful when you know the desired proportional change but do not need a named paper size.

Mixed Page Sizes and Rotated Pages

Every page is rescaled with the same setting in one pass. In Standard size mode, each page's current dimensions are measured individually and then adjusted to the selected target. A document containing mixed page sizes can therefore finish with uniform A4, Letter, or Legal pages.

Percentage mode also uses the same proportional factor for every page, but each factor is applied to that page's own current size. As a result, a document with mixed original dimensions can still end up with different absolute page sizes even though every page received the same percentage setting.

Rotation requires an extra check. Resizing uses each page's unrotated orientation, but an existing rotation flag is preserved. A page carrying a rotation flag may therefore still display sideways after a portrait or landscape target is applied. The tool shows a note when it detects a rotated page. If the result appears turned, reset the original page rotation first.

Why Resizing Does Not Create a 500 KB PDF

Page geometry and file size are not directly related. The bytes in a PDF depend on how its content is encoded, including its images, fonts, and other objects. Resize PDF does not re-sample embedded images, remove objects, or optimize the PDF specifically to save bytes. The downloaded document can therefore be a similar size to the original and, in some cases, larger.

The tool also has no kilobyte or megabyte target field. Choosing 50 percent tells it to halve every page's dimensions; it does not tell it to make the file half as large. For a scan or image-heavy document, resizing the page does not remove the underlying image data. The same content still has to be represented inside the new geometry.

If the real goal is a smaller file on disk, the required work is different. Image down-sampling and PDF object optimization are needed to reduce the encoded data. Resizing can standardize the page dimensions at the same time, but it cannot guarantee a 500 KB result by itself. Check the downloaded file's actual size after any separate optimization process rather than assuming that a particular page percentage will reach a byte target.

Which Resize Mode Fits Your Task?

Use Standard size with Fit when a printer, form, or recipient requires a specific paper format and you want to preserve the content's proportions.
Use Standard size when a mixed-size document needs every page converted to the same final page dimensions.
Use Percentage when you want to enlarge or reduce each page by a known factor without changing it to a named paper size.
Use Stretch only when the content should fill the target width and height independently and a deliberate change in proportions is acceptable.

If your requirement is expressed in kilobytes rather than inches, points, or percentages, page resizing addresses the wrong property. Decide first whether the PDF needs new page geometry. If it does, complete the resize and measure the result. If it does not, go directly to a process designed for image down-sampling and object optimization.

How to Resize a PDF in Your Browser

Open Resize PDF, click Browse PDF, and choose a file. You can also drag the PDF onto the page. It is read locally in your browser.
Select Standard size and choose A4, US Letter, or US Legal. Select portrait or landscape, then choose Fit or Stretch. Alternatively, switch to Percentage and enter a value such as 50 or 200.
Click Resize PDF. When processing finishes, use the result link to download the resized copy. Every page is rescaled according to the selected setting, and the original file is left untouched.

The complete operation is free. Nothing is uploaded to a server, so a resize does not require sending the document to a separate conversion service.

Privacy, Output, and Files the Tool Cannot Read

Your PDF is read into memory and processed locally with JavaScript running in your browser. There is no server upload, cloud storage, or tracking of the document's contents. The bytes stay on your device from selection through processing, and the tool creates a new PDF for direct download. Because processing is client-side, the tool also works offline once the page has loaded.

This local workflow keeps confidential contracts, medical records, and financial statements on your computer throughout the resize. The original PDF is not modified; only a new, resized copy is offered as the result.

Password-protected PDFs must be unlocked before they can be read. Corrupted files that cannot be read are reported clearly rather than being processed silently. Once you have a readable PDF, Resize PDF gives you a predictable way to standardize page dimensions, choose proportional or full-frame scaling, or adjust every page by percentage.