Is this PDF compressor really free?

Yes, 100% free forever. No hidden fees, no premium tier, no daily limit, no file size cap. Compress as many PDFs as you want, as large as you want. The service is ad-supported so it stays free for everyone.

Do I need an account to compress a PDF?

No. No signup, no login, no email, no captcha. Open the page, drop your PDFs, click compress, done.

Is my PDF uploaded to a server?

No. The entire compression runs locally in your browser. Your file never leaves your device. There is no server-side processing — you can verify this in your browser's Network tab.

How do I compress a PDF to 100KB, 500KB, or 1MB?

Drop your PDF and the four preset cards show the predicted output size for each compression level — before you compress. Pick the preset whose estimate is closest to your target. For most photo-heavy PDFs the Strong preset lands under 500KB, and the Extreme preset typically lands well under 200KB. Images-only PDFs compress the most; text-heavy PDFs stay closer to their original size.

How much can I shrink a PDF by?

It depends on what's inside. PDFs full of photos and scans typically shrink by 50–90%. PDFs that are mostly text with a few diagrams shrink by 5–20%. Already-optimised PDFs may not get smaller — in that case the original is returned unchanged.

Can I compress a PDF without losing quality?

Yes — the Light preset re-encodes embedded photos at a high quality level and strips metadata without touching the text layer or image dimensions. Most documents shrink 20–40% with no visible quality loss. For stronger compression pick Recommended or Strong — those re-encode and shrink images but still keep text fully searchable.

Will my text still be searchable after compression?

Yes on the Light, Recommended, and Strong presets — the text layer is left completely untouched and stays fully searchable and copyable. Only the embedded JPEG images are re-encoded. The Extreme preset rasterises each page as a low-DPI JPEG, which produces the smallest possible file but removes the searchable text layer. Pick whichever fits your use case.

How does the PDF compression actually work?

Most large PDFs are big because of embedded photos. We walk every image inside the PDF and re-encode it as a smaller JPEG using mozjpeg (the open-source encoder Mozilla developed for Firefox) running as WebAssembly in your browser. On the Recommended and Strong presets we also downsample images to 1600px or 1200px on the longest side. Finally we strip metadata and pack the object streams using the open-source pdf-lib library. The Extreme preset goes further and rasterizes each page as a low-DPI JPEG.

How do I compress a PDF for email?

Most email providers cap attachments at around 25MB (Gmail, Outlook), so for 'compress PDF for email' pick the Recommended preset — it typically lands a 50–100MB document safely under 10MB with no visible quality loss. If your provider caps smaller (10MB, 5MB), try the Strong preset. The predicted size shown on each preset card tells you before you run whether you'll make the cap.

What's the maximum file size?

There is no hard limit, but very large files (over ~500MB) may run out of browser memory on older machines. For everyday documents (1KB to 200MB) the compressor handles them fine on any modern desktop or laptop.

Is it safe to compress confidential PDFs here?

Yes — and this is the main reason we built the tool. The compression runs in your browser, the bytes never leave your device, and we have no server logs because there is no server in the loop. Government, legal, and medical users routinely use PDF Edit for exactly this reason.

Does the compressed PDF have a watermark?

No. Your compressed PDF is exactly your file, smaller. No branding, no watermarks, no inserted ads, no 'compressed with…' text.

Can I compress multiple PDFs at once?

Yes. Drop as many PDFs as you like onto the page. Each file is analysed individually and the preset cards show the total predicted size across your whole batch. Clicking Compress processes them one after another and lands them on the ready screen for individual download.

Compress PDF — Saib qhov loj me ntawm cov zis ua ntej koj nyem

Tso ib daim PDF thiab peb yuav qhia tus loj me uas xav tias rau txhua qhov teeb tsa (Light · Recommended · Strong · Extreme) ua ntej koj lees paub. 100% hauv koj qhov browser — tsis muaj upload, tsis muaj sign-up, tsis muaj watermark.

Drop one or more PDFs onto the page. We analyse each file locally and show the estimated output size for every preset (Light, Recommended, Strong, Extreme) before you click compress. 100% in-browser — your PDFs never leave your device. No signup, no watermark, no per-file charge.

Tso koj cov PDF rau ntawm no

los yog

Tsis xav tau xa. Txhua yam ua 100% hauv koj lub browser.

Yuav Khaws PDF Dawb Li Cas

1. Tso koj cov PDF

Rub ib daim los sis ntau daim PDF rau saum thaj chaw tso saud, los sis nyem mus saib. Cov ntaub ntawv yuav thauj rau hauv koj lub browser thiab raug tshuaj xyuas qhov ntawd — tsis muaj dab tsi xa rau server. Txhawb cov pawg ntau daim ntaub ntawv; tso ib lub folder tag nrho yog koj xav.

2. Saib cov kwv yees

Sai li sai tau thaum kev tshuaj xyuas tiav, txhua daim ntawm plaub daim npav uas teem tseg (Light, Recommended, Strong, Extreme) yuav qhia qhov kwv yees rau koj cov ntaub ntawv. Qhov ntawd yog tus lej koj yuav tau yog koj nyem khaws cia — tsis yog kev tshaj tawm.

3. Xaiv qhov haum

Xav tau muaj peev xwm xa email (qis dua 25MB)? Recommended yeej txaus. Lub hom phiaj qis dua 500KB? Saib daim Strong. Xav tau daim me tshaj plaws, tsis quav ntsej ntawv tshawb tau? Xaiv Extreme. Txhua daim qhia koj qhov kev sib pauv ncaj ncees.

4. Khaws thiab rub tawm

Nyem Compress. Daim PDF me dua raug tsim hauv koj lub browser. Txhua daim ntaub ntawv khaws cia yuav tshwm rau ntawm qhov screen npaj txhij nrog lub pob Download. Tsis muaj cim, tsis sau npe, tsis xa.

Khaws PDF rau 100KB Feem ntau ua tau rau Extreme rau cov ntaub ntawv qis 20 nplooj

Khaws PDF rau 500KB Strong uas teem tseg coj feem ntau cov PDF muaj duab ntau rau ntawm no

Khaws PDF rau 1MB Recommended uas teem tseg — pom tib yam

Npaj rau email (<25MB) Recommended tuav cov txwv Gmail + Outlook

Vim Li Cas Siv Peb Lub PDF Khaws Cia Dawb?

Dawb Tiag Tiag, Mus Tas Li

Tsis muaj sij hawm sim, tsis muaj kev txwv zais, tsis them nqi rau ib daim, tsis muaj txwv ua haujlwm txhua hnub. Khaws ntau PDF li koj xav, ntau zaus li koj xav. Kev pabcuam no tau txhawb los ntawm kev tshaj tawm yog li nws nyob dawb rau txhua tus.

Cov Kwv Yees, Tsis Yog Qhov Tsis Tau Cia Siab

Most online compressors make you upload, wait, and hope for a decent reduction. We analyse your PDF locally and show the estimated output size for every preset before you click compress. Pick the preset that hits your target. Stop guessing.

Tsis Muaj Account, Tsis Muaj Email

Pib khaws cia tam sim ntawd. Tsis sau npe, tsis ntes email, tsis muaj credit card hauv ntaub ntawv. Tib yam li computer software tau ua haujlwm ua ntej muaj "sij hawm sim dawb".

Cov Ntaub Ntawv Tsis Tawm Hauv Koj Lub Cuab Yeej

Tag nrho kev khaws cia ua hauv koj lub browser. Koj cov PDF tsis kov peb cov server vim peb tsis muaj rau koj cov ntaub ntawv — peb tsis pom koj cov ntaub ntawv li.

Tsis Muaj Kev Txwv Loj Me Los sis Pawg

Vim kev khaws cia ua hauv koj lub browser, qhov txwv tib leeg yog koj lub cuab yeej memory. Tso ib daim 500MB scan los sis 100-daim ntaub ntawv pawg — tsis muaj qhov "kev txwv xa" twg ntawm no.

Tsis Muaj Cim, Tsis Muaj Kev Hu Npe

Koj daim PDF khaws cia yog koj daim ntaub ntawv tib yam, me dua xwb. Tsis muaj cov ntawv "compressed with pdfedit.com", tsis muaj kab rau nplooj kawg, tsis muaj logos ntxiv.

Software Ncaj Ncees

Tsis muaj kev muag tsaus, tsis muaj "hloov kho los rub tawm", tsis muaj qhov yuam koj sau npe rau xov xwm. Txhua tus cuab yeej hauv pdfedit.com ua haujlwm rau txhua tus, txij thawj zaug nyem.

Ua Haujlwm Tsis Muaj Internet

Ib zaug nplooj ntawv no twb tau thauj, koj tuaj yeem tshem tawm hauv internet thiab lub khaws cia tseem ua haujlwm tau. Zoo rau cov ntaub ntawv tsis pub neeg paub uas koj xav ua tsis muaj network nyob ib puag ncig.

Plaub Lub Uas Teem Tseg Khaws Cia, Piav Qhia

Light — pom tib yam

Rov ua txhua daim duab embedded ntawm qib zoo siab thiab tshem metadata zais. Feem ntau txo qis 20-40% tsis muaj qhov pom poob qib. Zoo tshaj plaws rau cov ntawv pom zoo, daim ntawv ceeb toom, thiab cov ntaub ntawv uas qib duab tseem ceeb.

Recommended — qhov pib

Tib yam li Light, tab sis kuj txo cov duab uas dhau 1600 pixels rau sab ntev tshaj plaws (qib luam → qib screen). Feem ntau txo qis 50-70%. Koj yuav tsum saib zoo zoo thiaj pom qhov sib txawv ntawm cov duab, thiab ntawv tseem zoo nkauj thiab tshawb tau. Xaiv qhov haum tshaj rau feem ntau tib neeg.

Strong — txo nruj

Rov ua ntawm qib 55, txo rau 1200px. Feem ntau txo qis 65-85%. Pom mos rau cov duab muaj ntsiab lus tab sis daim duab, logos, thiab ntawv tseem ntse. Siv thaum koj yuav tsum tau ncav cuag qhov txwv nruj (qis dua 1MB) thiab koj qhov chaw muaj duab ntau.

Extreme — me tshaj plaws

Rasterizes every page as a 110 DPI JPEG. Typical reduction 80-95%. The output is image-only — text is not searchable. Use it when size is the only thing that matters (emailing a 500-page scan, archiving on a mobile device).

PDF Edit nrog Adobe, Smallpdf, iLovePDF

Yam Tshwj Xeeb	PDF Kho kom raug	Adobe	Smallpdf	iLovePDF
Cov ntaub ntawv upload mus rau neeg rau zaub mov?	No — 100% local	Yog lawm	Yog lawm	Yog lawm
Kwv yees qhov tawm tuaj ua ntej muab khaws?	Yes — all 4 presets	Tsis muaj	Tsis muaj	Tsis muaj
Xav tau Account?	Never	Dawb tier txwv	Dawb tier txwv	Dawb tier txwv
Kev txwv ntaub ntawv txhua hnub?	None	Tsis muaj (cloud)	2 txoj haujlwm / teev (dawb)	Loj + suav caps
Ua ntau cov ntaub ntawv ua ke?	Unlimited	Yog (paid)	Yog (paid)	Yog (paid)
Xaiv qib khaws cia?	4 named presets	3 lub uas teem tseg	2 lub uas teem tseg	3 lub uas teem tseg
Watermark ntawm qhov tso tawm?	No	Tsis muaj	Tsis muaj	Tsis muaj
Ua haujlwm offline tom qab load?	Yes	Tsis muaj	Tsis muaj	Tsis muaj

Thaum cov ntaub ntawv koj khaws cia tseem ceeb — kev cai lij choj, kev kho mob, ntawv nyiaj txiag, daim duab tsim — qhov hauv lub cuab yeej nkaus xwb yog qhov sib txawv ntawm "koj cov ntaub ntawv kov lwm tus server" thiab "koj cov ntaub ntawv tsis tawm ntawm koj lub tshuab". Qhov ntawd yog tag nrho qhov tseeb. Txhua feeb koj daim PDF nyob hauv lwm tus tej yam, yog ib feeb ntawm kev pheej hmoo uas koj tau kos npe.

Leej Twg Khaws PDF?

Cov xa email

Gmail, Outlook, thiab feem ntau cov server email kev lag luam txwv kev xa email rau 20-25MB. Lub Recommended uas teem tseg yeej tau coj ib daim PDF duab 50-100MB qis dua qhov txwv, kom koj tus neeg, tus thawj coj, los sis tus tswv chaw nyob tau txais daim ntaub ntawv tiag.

Cov ntawv tsim muaj txwv loj me nruj

Cov portals tsoom fwv, kev thov rau tsev kawm qib siab, thiab cov chaw ua haujlwm feem ntau txwv kev xa rau 2MB los sis 5MB. Siv qhov kwv yees-loj me los ncav cuag qhov txwv kom raug — tsis muaj "daim ntaub ntawv loj heev" tom qab koj tau siv kaum feeb sau ib daim ntawv.

Cov ntaub ntawv scanned

Cov scanners hauv xov tooj nyiam khaws duab ntawm 300 DPI, tsim 30MB PDF rau kaum nplooj ntawv. Strong los sis Extreme coj cov ntawd rov qab mus rau qhov me tsim nyog tsis ua kom ntawv nyeem tsis tau.

Cov ntaub ntawv kev cai lij choj

Cov kev xa hauv computer feem ntau txwv 10-20MB rau ib daim ntaub ntawv. Cov kws lij choj khaws cov ntaub ntawv pov thawj thiab cov ntaub ntawv tshawb fawb ntawm no vim hais tias hauv lub cuab yeej nkaus xwb txhais tau hais tias cov ntsiab lus tseem ceeb tsis tau hla lwm tus server thaum me dua.

Cov ntaub ntawv kho mob

Cov ntaub ntawv HIPAA-pab yuav tsum nyob hauv lub cuab yeej. Cov chaw kho mob thiab cov pab pawg them nyiaj khaws cov ntawv tsim, qhov kuaj, thiab cov ntaub ntawv kev pov hwm ntawm no vim kev pabcuam tsis pom cov ntsiab lus.

Cov tub ntxhais kawm thiab kws tshawb fawb

Txo 200MB ntawm cov nplooj kawm ua ntej xa email rau koj tus kheej los sis xa rau ib lub drive sib koom. Ua haujlwm rau cov laptops tsev kawm ntawv kaw thiab Chromebooks uas tsis muaj lwm yam rub tau.

Khaws PDF rau Txhua Lub Cuab Yeej

Peb lub PDF khaws cia ua haujlwm rau txhua lub cuab yeej uas muaj browser tshiab — Windows, Mac, Linux, Chromebook, iPad, iPhone, thiab Android. Tsis muaj software los rub, tsis xav tau plugin, tsis xav tau cov cai admin. Ib zaug nplooj ntawv twb tau thauj, koj tuaj yeem tshem tawm hauv internet thiab tseem khaws cia tau — txhua yam ua hauv lub cuab yeej.

Kev Khaws PDF Hauv Browser Ua Haujlwm Tiag Tiag Li Cas?

Feem ntau yam uas ua rau PDF loj yog cov duab embedded. Peb taug txhua daim duab hauv PDF thiab rov ua nws ntawm qhov me dua — feem ntau 15-20% me dua qhov koj lub browser yuav tsim ntawm qib qhov muag tib yam. Rau Recommended thiab Strong cov uas teem tseg peb kuj txo cov duab loj dhau ua ntej rov ua (ib daim duab 4000×3000 yuav los ua 1600×1200 los sis 1200×900 ua tib zoo) thiab tshem metadata uas tsuas siv chaw. Rau Extreme uas teem tseg txhua nplooj raug ua kom zoo li daim duab qis-resolution — feem ntau tsim ib daim ntaub ntawv 5-10% ntawm qhov qub, nrog tus nqi yog ntawv tsis tshawb tau ntxiv. Txhua yam ua hauv koj lub browser; tsis muaj ib feem ntawm koj cov ntaub ntawv xa rau qhov twg.

Cov Lus Nug Nquag

Kuv yuav khaws PDF dawb tsis poob qib zoo li cas?

Tso koj daim PDF rau saum nplooj ntawv thiab xaiv lub Light uas teem tseg. Nws rov ua cov duab embedded ntawm qib zoo siab — koj yuav tsis pom qhov sib txawv, thiab daim ntaub ntawv feem ntau yuav me dua 20-40%. Ntawv, daim duab, thiab logos tsis raug kov. Yog xav tau txuag ntau dua nrog ntawv tseem tshawb tau, xaiv Recommended.

Kuv yuav khaws PDF rau 100KB, 500KB, los sis 1MB li cas?

Tso daim ntaub ntawv thiab saib qhov kwv yees rau txhua daim npav uas teem tseg. Rau lub hom phiaj 100KB rau cov PDF luv muaj duab ntau, Extreme yog qhov teb. Rau lub hom phiaj 500KB-1MB, Strong feem ntau ua tau. Rau lub hom phiaj <10MB rau ib daim 50MB scan, Recommended txaus. Cov kwv yees yuav tshem qhov kev kwv yees tawm.

Lub PDF khaws cia no puas yog dawb tiag?

Yog, dawb 100% mus tas li. Tsis muaj sij hawm sim, tsis muaj qib siab, tsis them nqi rau ib daim. Kev pabcuam no tau txhawb los ntawm kev tshaj tawm.

Kuv daim PDF puas raug xa mus rau server?

Tsis yog. Kev khaws cia ua tag nrho hauv koj lub browser. Koj cov ntaub ntawv tsis kov peb cov server — peb tsis muaj rau koj cov ntaub ntawv. Koj tuaj yeem txheeb xyuas qhov no hauv koj lub browser Network panel.

Kuv puas khaws tau ntau daim PDF ua ke?

Muaj. Tso ntau daim ntaub ntawv li koj xav. Txhua daim raug tshuaj xyuas ib leeg thiab cov npav uas teem tseg yuav qhia tag nrho qhov kwv yees thoob plaws koj cov ntaub ntawv. Nyem Compress yuav ua lawv ib qho zuj zus.

Daim PDF khaws cia puas yuav muaj cim?

Tsis yog. Koj daim PDF khaws cia yog koj daim ntaub ntawv tib yam, me dua xwb. Tsis muaj cim, tsis muaj kev hu npe, tsis muaj cov ntawv "compressed with…".

Puas muaj txwv loj me ntawm ntaub ntawv?

Tsis muaj kev txwv. Cov ntaub ntawv txog ob peb puas megabytes khaws cia tau yooj yim hauv lub laptop. Cov ntaub ntawv loj heev (>500MB) tej zaum yuav txwv los ntawm browser memory rau cov tshuab qub.

Nws puas ua haujlwm tau thaum tsis muaj internet?

Muaj, ib zaug nplooj ntawv twb tau thauj tag. Kev khaws cia ua tag nrho hauv koj lub browser — koj tuaj yeem tshem tawm thiab tseem ua haujlwm tau.

Kuv cov ntawv puas tseem tshawb tau tom qab khaws cia?

Yog nyob rau Lub Teeb, Pom Zoo, thiab Muaj Zog - cov ntawv txheej txheem tsis raug cuam tshuam thiab tsuas yog embedded JPEGs yog rov encoded. Tsis muaj nyob rau Extreme — nplooj ntawv yog rasterised raws li cov duab, yog li cov ntawv nyeem dhau los ua ib feem ntawm daim duab thiab yog tsis xaiv los yog searchable.

Puas txhawb cov PDF muaj password?

Muaj, tsuav koj paub tus password. Yuav muaj kev hais kom koj sau tus password thaum kev khaws cia pib. Tus password tsuas siv hauv memory los qhib daim ntaub ntawv thiab tsis muab khaws cia rau qhov chaw twg.

Kuv yuav khaws PDF rau email li cas? (Gmail, Outlook, WhatsApp)

Tso koj daim PDF rau saum nplooj ntawv. Cov npav uas teem tseg yuav qhia qhov kwv yees rau Light, Recommended, Strong, thiab Extreme tam sim ntawd. Xaiv qhov haum koj tus muab kev pabcuam txwv: Gmail tso 25 MB rau ib tsab ntawv, Outlook kuj 25 MB (Office 365 nyiaj hauj lwm feem ntau yog 35 MB), WhatsApp 100 MB rau ib daim, iMessage 100 MB. Lub Recommended uas teem tseg feem ntau ua tau tag nrho plaub qhov rau cov PDF feem ntau. Kev khaws cia ua tag nrho hauv koj lub browser — koj daim PDF tsis mus txog peb cov server, qhov no tseem ceeb tshaj plaws thaum koj xa cov ntaub ntawv pom zoo, nqi, kev kho mob, los sis lwm yam tseem ceeb.

Kev khaws PDF ua hauj lwm li cas?

PDF muaj peb yam: ntawv (vector outlines + cov ntsiab lus fonts), duab (feem ntau JPEG los sis PNG bitmaps), thiab metadata (cim, daim ntawv tsim, cov ntaub ntawv embedded). Qhov txuag tau ntau tshaj feem ntau yog los ntawm kev rov ua duab embedded ntawm qib JPEG qis dua — qhov ntawd yog dab tsi txhua qhov uas teem tseg ua, nrog cov chaw teeb tsa loj zuj zus thaum koj mus ntawm Light mus rau Extreme. Lub Extreme uas teem tseg tseem ua nplooj uas yog scan tag nrho rau hauv duab, txo qis los ntawm 600 DPI mus rau 96-150 DPI duab. Ntawv tsis raug kov rau Light, Recommended, thiab Strong, yog li tshawb thiab luam/muab tseem ua tau; rau Extreme, ntawv scanned tau OCR-replaceable tab sis xaiv tsis tau. Peb tsis tshem PDF cov qauv, encryption, kos npe, los sis cov tag accessibility.

Kuv puas khaws tau PDF rau kuv lub iPhone, iPad, los sis Android xov tooj?

Muaj. Lub khaws cia ua haujlwm hauv ib qho browser hauv xov tooj — Safari rau iPhone/iPad, Chrome thiab Firefox rau Android, Samsung Internet, Brave Mobile. Tso ib daim PDF los ntawm Files, iCloud Drive, Google Drive, Dropbox, los sis koj qhov chaw khaws duab, xaiv ib qho uas teem tseg, thiab rub daim PDF me dua ncaj qha rov rau koj lub cuab yeej. Vim hais tias txhua yam ua hauv lub cuab yeej, koj daim PDF tsis tawm ntawm lub xov tooj — qhov no tseem ceeb rau cov ntaub ntawv kho mob, kev pom zoo kos npe, thiab cov ntaub ntawv se uas koj tsis xav cia hauv lwm tus server.

About this tool: PDF Edit is built by a small independent team who were tired of PDF tools that required accounts, watermarked outputs, and uploaded files to servers we didn't control. Everything here runs in your browser — your files stay on your device, there's no size limit, no signup, and no watermark on the output. Free forever, ad-supported. Reach out via the footer links with bugs or feature requests — we read every message.

Koj cov PDF khaws cia tau npaj txhij!

✏️ Kho Cov Ntawv 📎 Sib txuas 🔄 Hloov 📝 PDF rau Word

I don't like greed — or that we've lost privacy and ownership over our own tools. So I'm building software to combat this. No hidden accounts, no data mining, no paywalls. Just software that does what it has to.

Your compression happened in this tab. Tsis nyob qhov twg.

100% ua haujlwm hauv zos

Lwm cov website txhuam PDF muab koj cov ntaub ntawv xa rau lawv lub server, ua nws nyob nrog server, ces muab koj ib qho rub tawm. Peb ua tag nrho hauv lub browser tab no — koj cov PDF nyob hauv lub cuab yeej memory tag nrho lub sij hawm. Tsis muaj daim qauv hauv server vim peb tsis muaj server rau koj cov ntaub ntawv li.

Tsis muaj sim, tsis muaj dag, tsis muaj phom

Dawb mus ib txhis, txhawb nqa los ntawm kev tshaj tawm. Tsis muaj account, tsis muaj kev ntes email, tsis muaj credit card, tsis muaj dej cim ntawm cov tawm. Yam koj siv yog txhua yam peb muab.

Ua haujlwm offline, ua haujlwm txhua qhov

Thaum lub nplooj ntawv no tau nkag lawm koj tuaj yeem txiav internet thiab lub sib txuas tseem ua haujlwm. Windows, Mac, Linux, Chromebook, iPad, Android — txhua lub browser tshiab. Tsis txhob nruab, tsis txhob plug-in, tsis xav tau tus tswj cai.

Tsis muaj account
Tsis muaj upload
Tsis muaj dej cim
Tsis muaj txwv
Tsis muaj haujlwm rho ntaub ntawv
100% ntiag tug
Ua haujlwm offline
Tsis txhob sau npe ib zaug li

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