Guía completa: Dividir PDF por tamaño

Paso 1: Elige el tamaño objetivo

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.

Paso 2: Divide por tamaño

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.

Paso 3: Descarga y envía

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.

¿Dividir cambia la calidad?

No, las páginas quedan intactas.

¿Puedo unir las partes luego?

Sí, se pueden fusionar de nuevo.

¿Qué tamaño usar para email?

25 MB para Gmail, 20 MB para Outlook o un valor personalizado.

Herramientas

Primero prueba comprimir: Email‑ready.

Todas las herramientas PDF

Todas las herramientas PDFThin en un solo lugar.

Compresión para correo

Reduce PDFs a límites Gmail/Outlook con control de calidad.

Dividir por tamaño

Divide PDFs grandes en partes seguras.

Organizar PDF

Unir, rotar, eliminar, reordenar y dividir páginas.

Todas las guías de PDF

Explora todas las guías paso a paso.

Guía completa: comprimir PDF para correo

Flujo paso a paso para límites de Gmail 25MB y Outlook 20MB.

Reducir el tamaño de un PDF escaneado

Mantén el texto legible mientras reduces escaneos.

Dividir PDF por tamaño

Crea partes por debajo de un límite en MB.

Girar páginas PDF online

Corrige la orientación de escaneos o fotos de lado.