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File format

Format File format name Programs that use this format  Author
doc Microsoft Word Binary File Format Microsoft Word (97-2010)
WordPerfect
AbiWord
Apple Pages
AppleWorks
KWord
Microsoft Word
StarOffice
IBM Lotus Symphony
Microsoft 
docx Microsoft Word Open XML Document  Microsoft Word 2013
Corel WordPerfect X7
Apple Pages 5.2
MobiSystems OfficeSuite Pro 7
Google Drive
Microsoft 
pdf Portable Document Format Adobe Viewer
Ghostscript
Ghostview
Xpdf
gPDF
Acrobat Reader
Adobe Systems
pages Pages Document Pages 4.0
Pages 4.1
Pages 4.2
iWork '09
Google Docs
Jumpshare
Apple Inc.
jpg Joint Photographic Experts Group JFIF format Adobe Photoshop
Adobe Suite
Apple Preview
Corel Paint Shop Pro
Microsoft Office
Microsoft Windows Photo Gallery Viewer
Most web browsers
Joint Photographic Experts Group 
 jpeg Joint Photographic Experts Group JFIF format Adobe Photoshop
Corel Paint Shop Pro
Apple Preview
Microsoft Windows Photo Gallery Viewer
The JPEG Committee
png Portable Network Graphics Microsoft Windows Photos
Microsoft Paint
Adobe Photoshop CC
PNG Development Group (donated to W3C)
csv Comma Separated Values File Microsoft Excel
Microsoft Works
Corel Quattro Pro
Apache OpenOffice
LibreOffice
Microsoft Notepad
Libre Office
MobiSystems OfficeSuite Pro 7
Microsoft 
 xlsx Microsoft Excel Open XML Spreadsheet Microsoft Excel 2007
Open Office
Oxygen Office Progessional (Linux)
Microsoft 
numbers Numbers Spreadsheet File Apple Numbers (Mac, Web & iOS) Apple Inc.
ppt Microsoft PowerPoint Presentation File Apple Keynote
LibreOffice
Microsoft PowerPoint
OpenOffice
Microsoft 
 pptx  Microsoft PowerPoint 2007 XML Presentation Apple Keynote
Microsoft PowerPoint
OpenOffice
 Microsoft
html Hypertext Markup Language with a client-side image map Internet Explorer
Mozilla Firefox
Google Chrome
Opera
Safari
Other internet browsers
 
World Wide Web Consortium & WHATWG
url Internet shortcut file Apple Safari
Google Chrome
Microsoft Internet Explorer
Microsoft Word
Mozilla Firefox
Notepad
Opera
N/A
Show more

Guide pratique

Comment utiliser le convertisseur de PDF en ligne

  1. Veuillez saisir AltoPDF.com dans la barre d'adresse de votre navigateur.
  2. Dans l'application, sélectionnez l'opération que vous souhaitez effectuer avec votre PDF et choisissez la colonne correspondante (c'est-à-dire Gérer un PDF, Convertir ou Office et PDF).
  3. Sélectionnez l'outil souhaité dans le menu en cliquant dessus.
  4. Lorsque vous êtes redirigé vers une nouvelle page, téléchargez un fichier à partir de votre appareil ou importez-le à partir de Google Drive, Dropbox ou OneDrive.
  5. Suivez les instructions pour traiter votre fichier en ligne.
  6. Choisissez ce que vous voulez faire d'autre avec le fichier résultant. Téléchargez-le sur votre appareil ou enregistrez-le sur votre compte de service de stockage en cloud.
  7. Modifiez vos documents en ligne à l'aide de l'éditeur PDF basé sur le Web.
  8. Partagez le fichier résultant par courrier électronique, fax ou SMS.

Le tableau de comparaison des fonctionnalités ultimes

En raison de la forte concurrence sur le Web, il peut être difficile de choisir la meilleure application, surtout si vous ne la comparez pas correctement avec les autres options. Notre liste de contrôle vous aidera à trouver rapidement votre outil préféré pour work with PDF. Veuillez regarder les puissantes fonctionnalités de AltoPDF.

SmallpdfAdobe
Split PDF
Merge PDF
Combine & Reorder
Extract Pages
Compress PDF
Rotate PDF
No software downloads
Cloud storage Unlimited No info No info
Price Free Free 7-Day Trial paid Free 7-Day Trial paid
Encryption and security
Support 24/7/365 No info
No ads

Customer Reviews — Trusted by great people

Stephanie

02/28/2020

Awesome converter! I can experiment with my documents using various options, combining them to get the file I need. No more trouble with unsuitable formats. I get the right one in a matter of seconds.

Paul

01/24/2020

The best PDF converter I’ve ever come across! All-in-one solution! Extract, merge, split, convert to images and back… even e-signature is available. Everything’s on the table and for free.

Matthew

01/17/2020

I used to convert my PDF documents with other tools, but now that I found AltoPDF everything has become simpler. I can’t think of any drawbacks.

Your opinion matters!

If your experience was picture-perfect, please take a moment to tell us so.

How to Work with a PDF Online

Different paid software for converting PDFs is available online, but it’s vital you make the right choice. We’ve collected the best free features for you in one place.

Use a Safe Solution to Convert to a PDF Online

PDF is known as a universal format to use and share on the internet. For your convenience, you can effortlessly convert any document you have to PDF. 

Do this absolutely free of charge with AltoPDF and make use of advanced features:

  1. Save contracts from Word to PDF for safe storing.
  2. Convert Excel pages and tables for better performance.
  3. Transfer the PowerPoint presentation to PDF keeping the formatting.
  4. Change multiple JPG and PNG images to a single document to email fast.
  5. Easily save the Chrome HTML doc into the PDF file.
  6. Stay assured in a high level of data protection.
  7. Don’t stop editing — use our converter on your mobile device.
  8. Create a file in a portable document format from web pages.
  9. Perform conversions regardless of an operating system.

Our free converter covers the needs of many people. No need to download or install anything. Work in your browser, upload and convert files quickly, instantly save, share or keep editing the newly created PDF.

BackgroundUse a Safe Solution to Convert to a PDF Online

Easily Manage PDFs across your Apple Devices

Fill out forms, work with manuals and templates and perform other important tasks without installing any special paid software on your Mac or other Apple devices like iPhone or iPad. 

AltoPDF converter works from your browser and undertakes conversion the exact way you need:

  1. Make use of instant PDF conversions that save time.
  2. Transfer Pages to Doc even on the go.
  3. Change Doc to Pages to redact it in the most convenient way.
  4. Operate it for free and with no registration.
  5. Save Numbers to XLS and share with Microsoft Office users.
  6. Convert XLS to Numbers to form reports and tables on Mac.
  7. Keep your connection secure with AltoPDF.
  8. Explore additional innovative features. 

Our online platform is compatible equally well on iOS, Windows or Linux. Use it in your standard browser at the office, at home, or from any other place. Only an internet connection is required.

BackgroundEasily Manage PDFs across your Apple Devices

The Best way to Sign & Protect Your PDF

Nowadays, it is very important to keep up with everything, from saving time through managing paperwork, to speeding up the process of legally signing documents securely. You can easily use your esignature to certify important PDF documents on the web while staying under staying protected:

  1. Create your unique customized electronic signature.
  2. E-sign legal documents from any device.
  3. Put your legally valid signatures on contracts, tax forms, etc.
  4. Keep your sensitive data safe.
  5. Download a secured PDF to your cloud storage.
  6. Password protect your information.
  7. Remove the password from a secured doc, unlock PDFs online.
  8. Share documents with your teammates or email directly to the recipient.

Always use reliable programs to process PDF documents. Create your personal legally binding signature, sign documents electronically, keep them protected and share them with ease by using our advanced PDF editor online.

BackgroundThe Best way to Sign & Protect Your PDF

How to Find and Complete the Exact Form — Quick Search

The use of business, medical and tax forms saves time and money on phone calls and trips to the office to simply pick up the paperwork. An additional advantage is that many PDF templates are fillable and digital. 

This means that you can work with your documents online:

  1. Use our federated search to get the best results.
  2. Find the appropriate document the fastest way. 
  3. The PDF editor will recognize the editable fields automatically.
  4. Type on the PDF forms and save changes.
  5. Edit templates and add fillable fields.
  6. Insert and adjust images, shapes, checkmarks.
  7. Fill in the professionally designed templates.
  8. Date and sign contracts and business forms.
  9. Complete tax returns and file them with the IRS
  10. Use multi-purpose tools online from any device.

Our browser-based AltoPDF service provides an advanced search for different kinds of documents, templates, samples. Fill out forms, work with guidelines and perform other essential duties without the need to install and pay for software.

BackgroundHow to Find and Complete the Exact Form — Quick Search

How to Use Online PDF Converter on Your Phone

Many people think that for managing and converting PDFs they need to utilize professional software or even ask experts, but it's just not true. Anyone can work with our online PDF converter using their phone, desktop or tablet. We offer you a variety of useful services to solve any of your document management hurdles with PDFs, such as convert to and from PDF, merge, split, compress, rotate, sign, protect and even unlock/lock PDFs. 

The algorithm is a little different than other software on the market. All you have to do is choose the function you need and complete some simple steps: 

  1. Upload a file. Use your preferred cloud or internal storage. 
  2. Select the pages you want to work with if your actions are connected to printing, signing or changing the view of the document. 
  3. Start processing the document by tapping the orange button (convert, split, merge, etc.). 
  4. Wait while your document processes. 
  5. Click Download Now to save the file or do additional edits with the multi-functional editor by pdfFiller. 

Our online PDF converter is free and doesn’t require your email or phone number. Feel free to utilize it at any time for any purpose related to document management. 

Keep calm and know that your files are secure security. We use the latest security features to protect your data from all third parties.

You don't need to install additional software. Everything is available online in a browser from any device. If you have an Android or iOS device and often need to change the format of your documents, consider downloading the useful and tiny solutions from the AppStore and PlayMarket to make working with files easier and faster. 

Alto’s services offer one of the most significant lists of functions on the market and guarantee high-quality tools for managing documents. 

BackgroundHow to Use Online PDF Converter on Your Phone

How to Use Online PDF Converter on iPhone

Among hundreds of online converters, one of the most prominent ones is the Alto platform. It’s fully optimized for iPhones and iPads. This service has a user-friendly and very understandable interface that’s convenient for everybody who uses it. If you want to edit, convert, protect or sign your PDF, you can easily do it with Alto: 

  1. Open altopdf.com in Safari.
  2. Choose the type of action you need to be completed. Select it from more than fifteen available options. 
  3. Upload the file using the cloud or internal storage. 
  4. Pay attention to the Wizard tool, which will give you extra tips. 
  5. Download your new file or continue editing and signing it with pdfFiller’s online editor. 

View a full list of functions that can be completed directly on Alto’s website. All of the listed services are free and don’t require anything extra from you. Honestly, we won't ask about your credit card, phone number or even your email. 

But 'free' does not mean 'bad'. Every service is created by a professional team that knows how to build useful and high-quality software. 

This platform is also secure. It always has a valid certificate and uses the latest encryption methods for transferring your data. After completing the work and you exit the page, all the files uploaded will automatically be deleted from our servers. 

So if you need to manage PDFs from your iPhone, don’t forget about Alto. Add it to your bookmarks and transform portable document format files anytime, anywhere. 

BackgroundHow to Use Online PDF Converter on iPhone

How to Use Online PDF Сonverter on Android

If you want to work with portable document format files on your phone without additional software, consider using an online PDF converter by Alto. It has a variety of opportunities that will be useful for anyone who works with this type of file. 

  1. Open your browser. Go to altopdf.com and select the type of operation you need to complete. 
  2. Upload the file. 
  3. Check and make sure you uploaded the correct file.
  4. Perform additional tasks if needed (actual for signing, splitting or protecting). 
  5. Download your modified file.

As you see, it doesn't require any specialized knowledge or skills. By using the short and understandable tips above, everybody can utilize our service and edit files successfully in a minimal amount of time. Most conversions last less than a minute and that’s what allows us to say that this service really saves your time and energy. Use an online PDF converter on Android or any other platform for free. You don't have to register or give us your email or credit card info. 

In addition to being a great web-app for converting files, Alto gives you access to pdfFiller. If you need to utilize advanced tools for creating a professional-looking document, try pdfFiller and you won’t be disappointed!  

BackgroundHow to Use Online PDF Сonverter on Android

FAQ

AltoPDF est une plateforme en ligne gratuite qui permet de manipuler des fichiers PDF. L'une de ses principales caractéristiques est que vous pouvez importer des fichiers à partir de GoogleDrive et, une fois qu'ils sont traités, les exporter à nouveau. Le service permet de convertir des fichiers Word, PPT, JPG et PNG rapidement, gratuitement, en toute sécurité et en conservant la qualité du document original.