Komplett guide: dela PDF efter storlek

Steg 1: Välj målstorlek

Compression can only go so far, especially for scan‑heavy documents. If you must hit a strict limit (like 20 MB), splitting ensures each part stays under the cap while preserving page order.

Splitting is also useful when recipients prefer smaller files, when a PDF is too large to upload, or when your organization enforces strict attachment policies.

PDFThin lets you choose a target size and returns a ZIP containing ordered parts. This removes the guesswork from manual splitting.

Steg 2: Dela efter storlek

We estimate the average bytes per page and plan a page range that keeps each part under your target. Each part is optimized and, if needed, lightly recompressed so the size stays consistent.

If a part still exceeds the limit, PDFThin splits it again into smaller chunks. The result is a stable set of files labeled in order (part01, part02, etc.).

You get a ZIP archive with consistent naming, which makes it easy to attach parts in order.

Steg 3: Ladda ner och skicka

For email attachments, use a preset: Gmail 25 MB, Outlook 20 MB, Outlook.com 25 MB. If your provider is strict, choose a smaller custom target to allow for encoding overhead.

For uploads, set a target that matches the platform limit (for example, 10 MB per file). Splitting helps you avoid failed uploads and repeated retries.

PDFThin keeps the page order intact across parts so you can reconstruct the document easily.

Best practices

Keep the original file as a reference, then share the ZIP of split parts. When sending via email, attach the parts in order and include a short note for the recipient.

If you need a single file instead of parts, try the email‑ready optimizer first. It will only split when compression can’t reach your target.

Start here: Split PDF by size.

Förändras kvaliteten vid delning?

Nej, sidorna är oförändrade.

Kan jag slå ihop delarna senare?

Ja, delarna kan slås ihop igen.

Vilken storlek ska jag använda?

25 MB för Gmail, 20 MB för Outlook eller eget mål.

Verktyg

Prova först att komprimera: Email‑ready.

Alla PDF‑verktyg

Se alla PDFThin‑verktyg på ett ställe.

E‑postklar komprimering

Minska PDF:er till Gmail/Outlook‑gränser med kvalitetskontroll.

Dela efter storlek

Dela stora PDF:er i storlekssäkra delar.

Organisera PDF

Sammanfoga, rotera, ta bort, ordna om och dela sidor.

Alla PDF-guider

Bläddra bland alla steg-för-steg-guider.

Komplett guide: komprimera PDF för e‑post

Steg-för-steg för Gmail 25MB och Outlook 20MB.

Minska storleken på skannad PDF

Behåll läsbar text samtidigt som skanningar krymps.

Dela PDF efter storlek

Skapa delar under en MB-gräns.

Rotera PDF-sidor online

Fixa sidvända skanningar eller foton.