FileChak
Free · Private · No sign-up

Prepare files for Korean applications
and everyday upload limits.

Open HWP documents, prepare application PDFs and meet image or file-size requirements in your browser. Supported files stay on your device.

Prepare a fileKorea travel & work tools
  • No account
  • Mobile friendly
  • Local processing
PRIVATE BY DEFAULT
Your fileYour browserDownload
Processed on your deviceYour document is not uploaded for supported tasks.
START WITH THE TASK

What are you preparing for?

ALLPrepare one application PDFCombine supporting documents for a Korean job, school or public-office application.CHECKCheck files before uploadingReview size, A4 pages, format, orientation and filename before you submit.1MBCompress PDF to an exact upload limitWork toward 500KB, 1MB, 3MB or 5MB and compare the saved result.HWPOpen a Korean HWP or HWPX documentRead a file from a Korean school, company or public office without Hancom Office.KOREAPrepare a Korea entry or visa photoResize a K-ETA, e-Arrival or Korean visa image from your phone.SCANTurn a phone photo into a document scanStraighten a photographed page and improve its contrast before creating a submission copy.MASKMask personal informationCover unnecessary ID numbers, addresses or account details before sharing a copy.
KOREA TRAVEL, WORK & STUDY

Why FileChak is useful for Korean documents

See Korea tools

Travel & immigration

Work, study & compatibility

FEATURED TOOLS
→PDFImages to PDFCombine multiple JPG, PNG and HEIC photos into one A4 or original-size PDF.JPGCompress ImageReduce JPG, PNG or WebP size for forms, email and sharing.SCANScan a Document PhotoStraighten a photographed page and improve contrast.A4Resize PDF to A4Fit mixed page sizes to portrait or landscape A4.1MBCompress PDF to a Target SizeReduce a scanned PDF below 500KB, 1MB, 3MB or 5MB.ALLPrepare a Submission PackageCheck, combine and resize documents for Korean applications.
MEASURED EVIDENCE

Tested in FileChak

These are measured FileChak browser results from three public-safe synthetic PDFs. No personal or institutional documents were used.

Text and chart document

1.8MBat or below 1MB723KB

8 pages → 8 pages · saved result 723KB

  • checkedPage countThe page count was preserved.
  • checkedBody text and chartBody text, chart lines and markers were readable.
  • caution6pt small textSmall notes became softer and should be compared with the original.

Phone scan document

7.1MBat or below 1MB765KB

4 pages → 4 pages · saved result 765KB

  • checkedBody text and table linesKorean body text and table lines were visible.
  • checkedRed SAMPLE stampThe stamp outline and letters remained visible.
  • checkedPage countThe page count was preserved.

QR, stamp and image document

3.8MBat or below 1MB238KB

3 pages → 3 pages · saved result 238KB

  • cautionQR patternThe QR pattern remained visible, but it should be scanned separately after compression.
  • checkedStamp and imageThe main outlines of the red stamp and image remained visible.
  • cautionSmall textSmaller notes had lower clarity in the result.

Before you save

  • Pages are rebuilt as images, so searchable text, links and form fields may be removed.
  • QR codes should be checked separately after strong compression.
  • Results vary by PDF structure and browser. A target size cannot be guaranteed for every PDF; open the saved file before submitting it.

Last measured test: 2026-08-29 · Codex In-app Browser (Chromium, version not exposed) · Microsoft Windows NT 10.0.26200.0

PRIVATE LOCAL PROCESSING

Your file stays in your browser

  1. 1Select a fileChoose a document or image from your device.
  2. 2Prepare the resultSet pages, size, format or output quality.
  3. 3Save and checkDownload the result and open it before uploading to the destination.
ALL FILE TOOLS

Browse every available tool

↓PDFCompress PDFReduce scanned PDF size while controlling output quality.PDFMerge PDFCombine multiple PDFs into one file in your chosen order.1—3Extract PDF PagesSave pages such as 1, 1-3 or 1,6 as a new PDF.ZIPSplit PDFTurn every PDF page into an individual file and download a ZIP.JPGPDF to JPGConvert every PDF page into a clear JPG image.→PDFImages to PDFCombine multiple JPG, PNG and HEIC photos into one A4 or original-size PDF.↻Rotate PDFRotate upside-down PDF pages by 90 degrees and save a copy.LOCKProtect PDFAdd an AES-256 password and document permissions locally.JPGCompress ImageReduce JPG, PNG or WebP size for forms, email and sharing.PXResize ImageSet exact pixel dimensions and compare before and after.IMGConvert JPG, PNG & WebPChange image format and adjust the output quality.SCANScan a Document PhotoStraighten a photographed page and improve contrast.CROPCrop ImageCrop a photo freely or to a common aspect ratio.↻Rotate & Flip ImagesRotate or flip several images in one batch.WATERWatermark ImagesAdd text or a logo to multiple images.SNSSocial Media Image ResizerResize photos for profiles, posts, stories and thumbnails.EXIFRemove Image MetadataRemove EXIF, GPS and camera information from photos.DELDelete PDF PagesRemove selected pages and keep the rest in order.CROPCrop PDFRemove page margins in millimeters.A4Resize PDF to A4Fit mixed page sizes to portrait or landscape A4.1MBCompress PDF to a Target SizeReduce a scanned PDF below 500KB, 1MB, 3MB or 5MB.IMGExtract Images from PDFSave embedded photos from a PDF as PNG files.TXTPDF to TextExtract searchable PDF text into a TXT file.FLATFlatten PDFFix form fields and annotations into the page.T→PDFTXT to PDFTurn notes and plain text into an A4 PDF.ALLPrepare a Submission PackageCheck, combine and resize documents for Korean applications.CHECKCheck Files Before SubmissionCheck format, size, A4 pages and filenames before uploading.3×4Korean Visa & ID Photo ResizerCrop photos for Korean visa, passport and ID formats.KOREAKorea Entry Photo & Passport ImagePrepare K-ETA, e-Arrival and Korean visa images.MASKMask Personal Information in an ImagePermanently cover ID numbers, addresses and account details.HEICHEIC to JPGConvert iPhone photos for Korean upload portals.J→PDFJPG to PDFCombine JPG images into one ordered PDF.P→PDFPNG to PDFTurn transparent PNG images into a white-background PDF.IMG→GIF or BMP to PDFConvert GIF and BMP images into a PDF.VIEWPDF ReaderOpen and inspect PDF pages without installing an app.1↔2Organize PDF PagesReorder, repeat or omit pages in a new PDF.#Add Page Numbers to PDFPlace page numbers at the bottom of every page.WATERWatermark PDFAdd a submission or reuse-prevention message to every page.UNLOCKUnlock PDF You Are Authorized to UseRemove a known password or permitted print restriction.DOCKorean Document ViewerOpen PDF, DOCX, HWP, XLSX, PPTX and text files.SIGNSign or Stamp a PDFPlace a signature, Korean seal image, date or name on a PDF.MASKPermanently Redact a PDFCover personal data and remove hidden OCR text.HWPHWP & HWPX ViewerOpen Korean Hangul documents without Hancom Office.H→PDFHWP or HWPX to PDFConvert a Korean Hangul document to PDF or TXT.DOCXExtract Text from DOCXCopy clean text from a Word document.A가Character & UTF-8 Byte CounterCount characters, words, lines and bytes for Korean forms.SIGNTransparent Signature MakerDraw a signature and save a transparent PNG.FAXBlack & White Fax PreviewCheck light text and stamps before faxing.印Remove a Stamp BackgroundKeep a red seal or signature on transparent PNG.CSVFix Garbled Korean CSVRepair broken Hangul text in Excel CSV files.XLSXExcel & CSV ConverterConvert XLSX and CSV files in either direction.
FAQ

Private file tools, without the friction

Is it really free?

Yes. You can use the listed tools without an account or software installation.

Where are files processed?

Supported tasks run inside your browser. Closing the page removes temporary working data.

Does it work on mobile?

Yes. The page adapts to phones, tablets, laptops and desktop screens.