Quick start: compress a Stampli PDF in about 2 minutes

If your real goal is simply make this Stampli PDF smaller so it is easier to upload, review, and archive, this workflow is usually enough:

  1. Start with the invoice packet, vendor statement, receipt bundle, receiving support PDF, credit memo backup, or approval file you actually plan to keep.
  2. Open Compress PDF.
  3. Upload the file and choose Medium compression first.
  4. Download the smaller result and compare the new size with the original.
  5. Preview the weak spots: vendor names, invoice numbers, dates, line-item tables, totals, taxes, PO references, and any faint comments or stamps.
  6. If the file came from a scanner or phone camera, run OCR PDF so the final document is searchable as well as smaller.
  7. If the packet still feels bulky, split the appendix, extract only the useful pages, or remove duplicates before trying stronger compression.
Best default for Stampli prep: start with Medium compression. It usually gives the safest balance between a lighter file and a document that still feels dependable when AP, finance, procurement, or an auditor opens it later.

Why Stampli PDFs get bulky

Stampli document workflows often collect more context than one person actually needs in the next step. A supplier invoice may pick up a statement page, a receipt image, a receiving note, an approval backup, or a screenshot from another system. By the time the file looks final, it is often carrying more image weight and duplicate context than the workflow really requires.

Smaller PDFs help because they move more smoothly through normal AP work. They upload faster, feel less clumsy to review, and are easier to retrieve later during close, vendor follow-up, accrual checks, payment review, or audit prep. The goal is not to erase detail. The goal is to remove wasted weight while keeping the support inside the file trustworthy.

  • Faster uploads and sharing: useful when attachments need to move through AP or approval workflows without friction.
  • Cleaner review experience: lighter PDFs are easier for controllers, approvers, accountants, and vendors to open.
  • Less scan bloat: phone-captured receipts, signed approvals, and paper-origin invoice packets often contain far more image weight than value.
  • Better archive quality: smaller files are easier to store, resend, and reuse later.
  • More flexible follow-up work: compact PDFs are easier to OCR, crop, split, merge, and compare later.
Simple rule: compress the file enough to remove drag, not so hard that invoice numbers, totals, PO references, or approval notes become harder to trust.

What size should a Stampli PDF be?

There is no single perfect number for every Stampli workflow, so practical ranges are more useful than chasing the tiniest result possible. You want a file that feels easy to open and review while still looking like dependable AP support.

Document type Practical target Why it works
Text-heavy invoice, vendor form, or approval summary < 1MB to 2MB Usually enough for PDFs that should stay quick to upload and easy to review.
Invoice packet with a few support pages 2MB to 4MB Gives room for statements, receiving notes, or supporting screenshots without turning the file into a drag.
Receipt bundle or scan-heavy statement packet 2MB to 5MB Often realistic when image-heavy pages are involved and the smallest details still need to stay readable.
Oversized archive or mixed AP appendix Split it If one PDF contains several unrelated purposes, a cleaner structure often beats stronger compression.

Those ranges are not hard rules. They are working targets that help you avoid two common mistakes: keeping a bloated file just because it still opens, or crushing the PDF so much that faint figures, notes, and approval context become risky to rely on later.

Good default target: if the Stampli file is mostly text, tables, and ordinary support pages, try to keep it under 2MB first. If it is image-heavy, aim for a file that still feels crisp rather than obsessing over the smallest possible number.

Which compression level should you choose?

Compression works best when you pick the level that matches the document. For Stampli, that usually means starting in the middle instead of jumping straight to the most aggressive setting.

Low compression

Good when the PDF is already fairly clean and only needs a gentle size reduction. Use this for exported invoices, typed vendor forms, or short approval backups that already look sharp.

Medium compression

This is the safest default for most Stampli documents. It usually removes enough weight to matter while keeping invoice numbers, totals, dates, account notes, PO references, and signatures readable.

High compression

Save this for PDFs that stay too large after smarter cleanup. It can help with bulky scans, but it is also the setting most likely to make small tables, faint stamps, or marginal comments harder to trust.

Best starting point: use Medium first, then clean the packet structure before trying harsher compression. In AP work, less wasted PDF usually solves more than more aggressive shrinking.

Step-by-step: shrink a Stampli PDF with LifetimePDF

  1. Save the final file first. Work from the version you truly plan to upload, not a rough packet with duplicate pages or stale support.
  2. Open the tool. Go to Compress PDF.
  3. Upload the PDF. Choose the invoice packet, statement, approval backup, receipt set, or AP support file.
  4. Select Medium compression. That is usually the best first pass for Stampli documents.
  5. Download the result. Compare the new size with the original so you know whether the reduction was meaningful.
  6. Review the fragile details once. Check invoice numbers, vendor names, dates, line items, taxes, totals, PO references, approver notes, and any handwritten or stamped text.
  7. Use cleanup tools only if needed. If the file is still heavier than it should be, use OCR, extract pages, crop borders, or split the appendix before compressing harder.
Important habit: always review the smallest useful details after compression. A file that is lighter but no longer dependable is not really finished.

Best approach for common Stampli document types

Different PDFs get heavy for different reasons. The safest workflow depends on what the file actually contains.

Supplier invoices and ordinary AP support PDFs

These are usually text-heavy and compress well. Start with Medium compression and check the invoice number, supplier details, dates, tax lines, banking references, and totals once before keeping the smaller copy.

Vendor statements and remittance support

Statements often have dense rows, fine print, and multiple page totals. Medium compression is still the best first move, but pay extra attention to statement dates, aging columns, running balances, and account numbers.

Receipt bundles and mixed expense backup

These become bulky because of phone captures, image-heavy pages, and repeated scans. OCR and light crop cleanup often improve both file size and readability more than stronger compression alone.

Approval packets with screenshots or extra exhibits

If the packet contains pages the next reviewer does not really need, trim first. A cleaner packet structure usually protects readability better than forcing the whole document through aggressive compression.

Rule of thumb: if the file is mostly clean text and tables, compress it. If it is mostly scan waste, duplicate pages, or oversized appendices, clean it before you compress harder.

What to clean up before compressing harder

If Medium compression still leaves the file feeling too large, the answer is often structural cleanup rather than more force.

  • Remove duplicate pages: rescans, repeated statements, and duplicate support pages are common AP clutter.
  • Delete blank backsides or divider pages: they add size without adding value.
  • Crop empty borders: phone captures and scanner edges can waste surprising space.
  • Extract only the useful pages: if the next reviewer needs three pages, do not send twelve.
  • Split one oversized packet: separate the main invoice packet from background appendix material when that makes the workflow clearer.
  • Run OCR on image-only files: searchable text usually makes scanned PDFs more useful after compression.

A smaller, cleaner packet usually beats a heavily compressed messy one. That is especially true when the PDF may be reopened later by finance, procurement, auditors, or vendors who were not part of the original upload.

How to keep AP details readable

A fast review after compression prevents most avoidable problems. Do not reread the whole PDF. Check the parts most likely to fail first.

  • Invoice numbers and supplier names
  • Invoice dates, due dates, and statement periods
  • PO references, account codes, and department notes
  • Totals, taxes, discounts, and balance amounts
  • Approval comments, stamps, signatures, and handwritten notes
  • The smallest table rows or faintest scan text anywhere in the packet
Best review trick: zoom in on the weakest-looking part of the PDF first. If that area is still trustworthy, the rest of the document usually is too.

Workflow habits that reduce PDF bloat

A few small habits keep future Stampli files cleaner before compression even starts:

  • Export digitally whenever possible instead of printing and rescanning a clean file.
  • Keep the invoice packet and the background appendix separate unless the next reviewer truly needs both together.
  • OCR scanned files early so later edits and searches stay easier.
  • Remove duplicate pages before archiving the final copy.
  • Use one final compressed version instead of saving multiple resized copies of the same packet.

None of those habits are dramatic. They just reduce the chance that an ordinary invoice packet turns into a 10MB attachment nobody enjoys opening later.

FAQ (People Also Ask)

How do I compress a PDF for Stampli?

Upload the Stampli-ready PDF to a PDF compressor, start with Medium compression, and preview the smaller result before you keep it. For most Stampli workflows, Medium is the safest starting point because it lowers file size while keeping invoice numbers, vendor names, PO references, totals, and approval notes readable.

What file size should I aim for with Stampli PDFs?

Under 2MB is a strong target for text-heavy invoices, vendor forms, and ordinary AP support PDFs. Receipt bundles, statement packets, and scan-heavy finance documents often work better around 2MB to 5MB as long as the smallest useful details still look clear.

Should I run OCR on scanned Stampli documents before compressing them?

Usually yes if the file came from a scanner or phone camera and the text is not selectable. OCR makes invoices, receipts, statements, and support packets searchable, easier to review, and easier to reuse later during close, audit prep, and vendor follow-up.

Will compression make invoice totals or approval notes blurry?

It can if you compress too aggressively. That is why Medium compression is usually the best first move. Always review invoice numbers, dates, totals, PO references, and faint scan text before you keep the smaller file.

What if my Stampli PDF is still too large after compression?

Delete duplicate or blank pages, crop empty scan borders, extract only the pages the next reviewer needs, split one oversized packet into smaller PDFs, or run OCR on image-only paperwork. In many Stampli workflows, sending less PDF works better than forcing harsher compression on the same bloated packet.

Ready to clean the file up? Start with the compressor, then use OCR or page tools only if the PDF still carries more weight than the next AP step needs.

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