Mass Market Paperback
4.25 x 6.87 in
108 x 175 mm | 4.25 x 6.89 in
Trade Paperback (5x8)
5 x 8 in
127 x 203 mm | 5.00 x 7.99 in
Trade (5.5x8.5)
5.5 x 8.5 in
140 x 216 mm | 5.51 x 8.50 in
US Trade (6x9)
6 x 9 in
152 x 229 mm | 5.98 x 9.02 in
A5
148 x 210 mm
148 x 210 mm | 5.83 x 8.27 in
B5 (JIS)
176 x 250 mm
176 x 250 mm | 6.93 x 9.84 in
Royal (6.14x9.21)
6.14 x 9.21 in
156 x 234 mm | 6.14 x 9.21 in
Crown Quarto
189 x 246 mm
189 x 246 mm | 7.44 x 9.69 in
US Letter
8.5 x 11 in
216 x 279 mm | 8.50 x 10.98 in
A4
210 x 297 mm
210 x 297 mm | 8.27 x 11.69 in
Square (8.5x8.5)
8.5 x 8.5 in
216 x 216 mm | 8.50 x 8.50 in
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About Trim Sizes

Trim Sizes was built for the moment you just need to handle this task and move on — no signup, no upload to a third-party server. Processing runs locally in your browser using modern Web APIs. Nothing is uploaded, nothing is logged, and there is no quota to worry about for casual use. Like everything else in the utility collection, it is free, ad-light, and works on mobile as well as desktop.

When you'd reach for Trim Sizes

  • You're cleaning up a folder of files that accumulated over a project and need to standardize them.

    Designers, writers, and developers wrapping up deliverables.

    Drop each file in, copy the output, move on.

  • You're on a public or shared machine and don't want to leave traces of what you're working on.

    Travelers, contractors, anyone working from a friend's computer.

    Nothing is uploaded, nothing persists if you're not signed in.

  • You need to handle a one-off task right before a meeting and don't have time to install anything.

    Anyone working remotely on a borrowed or restricted machine.

    Open the page, get the result, paste it into your doc — under a minute.

  • You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.

    Marketers and ops people whose primary tool is metered.

    Stay productive without burning credits.

Frequently asked about Trim Sizes

Are my files uploaded to a server when I use Trim Sizes?
Trim Sizes processes everything in your browser using local APIs. Your files never leave your device.
Is Trim Sizes really free?
Yes — Trim Sizes is free for unlimited personal use, with no account required and no watermark on the output.
Does Trim Sizes work on mobile?
Yes, Trim Sizes is fully responsive and tested on iOS Safari and Android Chrome.
Will Trim Sizes change my original file?
Never. Trim Sizes only reads your input file and produces a new output file.
What browsers does Trim Sizes support?
Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.

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