Guida completa: dividi PDF per dimensione

Passo 1: Scegli la dimensione

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.

Passo 2: Dividi per dimensione

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.

Passo 3: Scarica e invia

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.

Dividere cambia la qualità?

No, le pagine restano intatte.

Posso riunire le parti?

Sì, puoi unirle di nuovo.

Che dimensione usare?

25 MB per Gmail, 20 MB per Outlook o un valore personalizzato.

Strumenti

Prima prova a comprimere: Email‑ready.

Tutti gli strumenti PDF

Tutti gli strumenti PDFThin in un unico posto.

Compressione email

Riduci PDF ai limiti Gmail/Outlook con controllo qualità.

Dividi per dimensione

Dividi PDF grandi in parti sicure per dimensione.

Organizza PDF

Unisci, ruota, elimina, riordina e dividi pagine.

Tutte le guide PDF

Sfoglia tutte le guide passo‑passo.

Guida completa: comprimere PDF per email

Workflow passo‑passo per i limiti Gmail 25MB e Outlook 20MB.

Ridurre la dimensione di un PDF scansionato

Mantieni il testo leggibile riducendo le scansioni.

Dividere PDF per dimensione

Crea parti sotto un limite in MB.

Ruotare pagine PDF online

Correggi l’orientamento di scansioni o foto di lato.