Guia completo: dividir PDF por tamanho

Passo 1: Escolha o tamanho alvo

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: Divida por tamanho

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: Baixe e envie

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 altera a qualidade?

Não, as páginas permanecem intactas.

Posso juntar as partes depois?

Sim, é possível unir novamente.

Qual tamanho usar para email?

25 MB para Gmail, 20 MB para Outlook ou um valor personalizado.

Ferramentas

Antes, tente compactar: Email‑ready.

Todas as ferramentas PDF

Todas as ferramentas PDFThin num só lugar.

Compressão para e-mail

Reduza PDFs aos limites Gmail/Outlook com controlo de qualidade.

Dividir por tamanho

Divida PDFs grandes em partes seguras.

Organizar PDF

Unir, rodar, eliminar, reordenar e dividir páginas.

Todos os guias de PDF

Explore todos os guias passo a passo.

Guia completo: comprimir PDF para email

Workflow passo a passo para limites do Gmail 25MB e Outlook 20MB.

Reduzir o tamanho de PDF digitalizado

Mantenha o texto legível enquanto reduz digitalizações.

Dividir PDF por tamanho

Crie partes abaixo de um limite em MB.

Rodar páginas PDF online

Corrija a orientação de digitalizações ou fotos de lado.