DollarWise

PDF Email Optimizer — Shrink PDFs to Fit Attachment Limits

October 16, 2026 · 2 min read · By the DollarWise team

“Attachment too large” is the most annoying email error there is. This optimizer does three things in one pass: recompresses oversized images, flattens fillable form fields so the file can’t be edited in transit, and rebuilds the PDF cleanly — then checks the result against Gmail’s 25MB and Outlook’s 20MB attachment limits with a clear pass/fail readout. All in your browser.

PDF Email Optimizer

One pass: shrink images, flatten forms, and verify it fits your mail provider's limits.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Add your PDF

Drag & drop your PDF here or click to browse — one PDF at a time

    2 Optimization options

    Locks fillable fields into the page so recipients can't edit them.
    Removes author, creator app, and timestamps from the file properties.

    3 Optimize & download

    Working…

    ✅ Done — your email-ready PDF

    🎉 Free forever. No sign-up. No credit card. No limits.

    Optimize as many PDFs as you like — your files never leave your browser.

    How it works

    • Step 1 — Drop in the PDF you want to email.
    • Step 2 — Pick a quality preset, and choose whether to flatten fillable forms and strip metadata.
    • Step 3 — Images are recompressed, forms are flattened (fields become permanent page content), metadata is stripped, and the PDF is rebuilt — then the result is checked against Gmail (25MB) and Outlook (20MB) limits.

    Everyday uses

    • Job seekers — resumes that sail through any company’s inbox.
    • Freelancers — invoices and contracts clients can open without download errors.
    • Students — assignment PDFs that fit the school mail quota.
    • Anyone — flattened forms can’t be tampered with after you send them.

    Rule of thumb: the Email preset (75% image quality) is the sweet spot — visibly identical on screen, dramatically smaller to send.

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