Schedule up to 500 posts from 1 spreadsheet

Example: a month of posts for a gym

A gym plans its October in Google Sheets: 3 posts a week for Instagram, Facebook and Google Business Profile, each with a picture link from its website. The marketer downloads the sheet as CSV and uploads it. The check finds 2 problems: 1 date was typed as 10/03/2026, which could mean 10 March or 3 October, and 1 Instagram line has no picture. She fixes both in the sheet, uploads again, and 13 posts land on the calendar in under a minute.

The columns, one by one

date: the day and time, like 2026-11-03 09:30 or 2026-11-03 9:30 PM, in the time zone of your browser. Times in the past and dates more than 2 years ahead are refused. text: the post. Line breaks inside a cell are kept. channels: channel names separated by |, for example Acme Instagram|Acme Facebook. A line with channels goes only to those; a line without uses the defaults you picked. media_url: links to up to 10 pictures or videos, separated by |. The link must open the file itself. tags: tag names separated by |. first_comment: posted as the first comment or a reply, on networks that allow it.

What the check catches

Before anything is created, each line is checked like a post in the editor would be: the date and time, that every channel exists, that there is text or a picture, and each network's own rules with the channel's saved default settings, such as Instagram needing a picture or the character limit on X. You see every line with its result and can show only the lines with problems. Nothing is saved until you press the button.

Dates that could be read 2 ways are refused instead of guessed. A daylight saving change is handled for you, so a post set for 09:30 goes out at 09:30 local time on both sides of the change.

Why a file never creates a post twice

Networks and servers sometimes fail half way. Postozo marks each line as done in the same step that creates its post, so if the import is interrupted and starts again, lines already made are skipped. This is the same rule the publishing engine follows: a post is never sent twice. When the import finishes you get 1 notification with how many posts were made and how many lines need a fix.

Limits and rules

A small sample file

The first line holds the column names. Each next line is 1 post:

date,text,channels,media_url,tags,first_comment
2026-11-03 09:30,"New seeded rye, warm from 8 am.",Bakery Instagram|Bakery Facebook,https://example.com/rye.jpg,Bread,Order in store or online.
2026-11-05 12:00,10% off all loaves before noon.,Bakery Google,,Offers,
2026-11-07 18:00,We are hiring a morning baker.,Bakery LinkedIn,,Hiring,

Text with a comma goes inside double quotes. Columns can be in any order, and you can leave out columns you do not use.

Tips to get more from it

• Keep 1 tab in your sheet for each month, and export only the tab you upload.
• Put picture links that open the image itself, ending in .jpg or .png, not a web page that shows the image.
• Use Save as drafts the first time, look at 2 or 3 posts on the calendar, then upload again with Schedule.

Words on this page, explained

Mistakes to avoid

• Writing dates with slashes. 03/05/2026 is refused because it could mean 2 different days.
• Linking to a web page instead of the picture itself. The link has to open the image or video directly.
• Using channel names that differ from the names in Postozo. Copy them from the channel list, or leave the column out and pick defaults.

Who it is for

• Agencies move a client's monthly plan from a spreadsheet into the calendar in 1 step. See Agencies.
• Marketing teams import a campaign that was planned and approved in a shared sheet. See Marketing teams.
• Small businesses plan a season at once instead of post by post. See Small business.

How other tools handle bulk upload (CSV)

Of the 12 social media tools we compare, 9 list bulk upload (CSV) on their own pricing, feature or help pages:

• Hootsuite: included
• Sprout Social: CSV bulk scheduling (up to 350 posts) is on Professional and Advanced.
• Metricool: included
• SocialPilot: Premium and Ultimate only.
• Publer: Up to 500 posts at once, including CSV.
• Sendible: included
• Vista Social: included
• Planable: CSV import of posts.
• Agorapulse: CSV bulk scheduling of up to 200 posts on Advanced and up.

Not confirmed on their own pages: Postiz, Buffer and Later.

Checked on 29 September 2026 on each tool's official website. Prices and features change, so check before you decide.

Plans and limits

Bulk upload is in every plan. The posts it creates count like any other post, and every plan has unlimited posts. See Pricing for every limit.

Works with these channels

Bulk upload works on every connected channel. These are the ones people use it with most:

See all channels, or compare Postozo with other tools on the compare page.